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  Plantae
    Viridiplantae
     Streptophyta
     Embryophyta
      Tracheophyta
        Spermatophytina
            Magnoliopsida
                  Asteranae
                    Lamiales
                           [Callitrichales]
                           [Plantaginales]
                           [Scrophulariales]
                            Plantaginaceae
                                   [Plantago truncata var. truncata]
                                   [Plantago truncata]
                                   [Callitrichaceae]
                                   [Globulariaceae]
                                   [Hippuridaceae]
                                     Amphianthus
                                             Amphianthus armatus
                                             Amphianthus bathybium
                                             Amphianthus brunneus
                                             Amphianthus californicus
                                             Amphianthus capensis
                                             Amphianthus caribaea
                                             Amphianthus crassus
                                             Amphianthus dohrnii
                                             Amphianthus impeditus
                                             Amphianthus ingolfi
                                             Amphianthus islandicus
                                             Amphianthus lacteus
                                             Amphianthus laevis
                                             Amphianthus margaritaceus
                                             Amphianthus michaelsarsi
                                             Amphianthus minutus
                                             Amphianthus mirabilis
                                             Amphianthus mopseae
                                             Amphianthus natalensis
                                             Amphianthus nitidus
                                             Amphianthus norvegicus
                                             Amphianthus radiatus
                                             Amphianthus rosaceus
                                             Amphianthus sanctaehelenae
                                             Amphianthus valdiviae
                                             Amphianthus verruculatus
                                     Angelonia
                                             Angelonia angustifolia
                                             Angelonia gardneri
                                             Angelonia salicariifolia
                                     Antirrhinum
                                             Antirrhinum bellidifolium
                                             Antirrhinum maculatum
                                             Antirrhinum majus
                                             Antirrhinum uniflorum
                                             Antirrhinum vexillo-calyculatum
                                     Asarina
                                     Bacopa
                                             Bacopa acuminata
                                             Bacopa caroliniana
                                                   [Hydrotrida caroliniana]
                                             Bacopa egensis
                                             Bacopa eisenii
                                             Bacopa innominata
                                                   [Bacopa cyclophylla]
                                                   [Bacopa stragula]
                                                   [Herpestis rotundifolia]
                                             Bacopa monnieri
                                                   [Bramia monnieri]
                                                   [Lysimachia monnieri]
                                             Bacopa repens
                                                   [Gratiola repens]
                                                   [Macuillamia obovata]
                                                   [Macuillamia repens]
                                             Bacopa rotundifolia
                                                   [Bacopa nobsiana]
                                                   [Bacopa simulans]
                                                   [Bramia rotundifolia]
                                                   [Hydranthelium rotundifolium]
                                                   [Macuillamia rotundifolia]
                                             Bacopa stricta
                                                   [Caconapea stricta]
                                     Bramia
                                     Caconapea
                                     Callitriche
                                             Callitriche anceps
                                             Callitriche bolanderi
                                             Callitriche brutia
                                               Callitriche brutia var. hamulata
                                                     [Callitriche hamulata]
                                                     [Callitriche intermedia ssp. hamulata]
                                                     [Callitriche intermedia ssp. intermedia]
                                                     [Callitriche intermedia]
                                             Callitriche fassettii
                                             Callitriche hamulata
                                             Callitriche hermaphroditica
                                                   [Callitriche autumnalis]
                                             Callitriche heterophylla
                                               Callitriche heterophylla var. bolanderi
                                                     [Callitriche bolanderi]
                                                     [Callitriche heterophylla ssp. bolanderi]
                                               Callitriche heterophylla var. heterophylla
                                                     [Callitriche anceps]
                                                     [Callitriche heterophylla ssp. heterophylla]
                                             Callitriche intermedia
                                             Callitriche longipedunculata
                                             Callitriche marginata
                                                   [Callitriche sepulta]
                                             Callitriche palustris
                                                   [Callitriche palustris var. verna]
                                                   [Callitriche verna]
                                             Callitriche pedunculosa
                                                   [Callitriche nuttallii]
                                             Callitriche peploides
                                               Callitriche peploides var. peploides
                                               Callitriche peploides var. semialata
                                             Callitriche stagnalis
                                             Callitriche stenoptera
                                             Callitriche terrestris
                                                   [Callitriche austinii]
                                                   [Callitriche deflexa var. austinii]
                                                   [Callitriche deflexa var. subsessilis]
                                                   [Callitriche deflexa]
                                             Callitriche trochlearis
                                     Capraria
                                             Capraria biflora
                                             Capraria mexicana
                                     Chaenorhinum
                                           [Chaenarrhinum]
                                           [Chaenorrhinum]
                                             Chaenorhinum calycinum
                                                   [Antirrhinum calycinum]
                                             Chaenorhinum minus
                                                   [Chaenarrhinum minus]
                                               Chaenorhinum minus ssp. minus
                                     Chelone
                                             Chelone cuthbertii
                                                   [Chelone grimesii]
                                             Chelone filiformis
                                             Chelone glabra
                                                   [Chelone chlorantha]
                                                   [Chelone glabra var. chlorantha]
                                                   [Chelone glabra var. dilatata]
                                                   [Chelone glabra var. elatior]
                                                   [Chelone glabra var. elongata]
                                                   [Chelone glabra var. glabra]
                                                   [Chelone glabra var. linifolia]
                                                   [Chelone glabra var. ochroleuca]
                                                   [Chelone glabra var. typica]
                                                   [Chelone montana]
                                             Chelone latifolia
                                             Chelone lyonii
                                             Chelone obliqua
                                               Chelone obliqua var. erwiniae
                                               Chelone obliqua var. obliqua
                                               Chelone obliqua var. speciosa
                                             Chelone rubicunda
                                     Chionophila
                                             Chionophila jamesii
                                             Chionophila tweedyi
                                     Collinsia
                                             Collinsia antonina
                                             Collinsia austromontana
                                             Collinsia bartsiifolia
                                               Collinsia bartsiifolia var. bartsiifolia
                                               Collinsia bartsiifolia var. davidsonii
                                               Collinsia bartsiifolia var. hirsuta
                                               Collinsia bartsiifolia var. stricta
                                             Collinsia borea
                                             Collinsia bruceae
                                             Collinsia caliginosa
                                               Collinsia caliginosa caliginosa
                                               Collinsia caliginosa nemenziana
                                             Collinsia callosa
                                             Collinsia childii
                                             Collinsia clypiella
                                             Collinsia concolor
                                             Collinsia corymbosa
                                             Collinsia crassipalpis
                                             Collinsia dentata
                                             Collinsia despaxi
                                             Collinsia distincta
                                             Collinsia ezoensis
                                             Collinsia grandiflora
                                                   [Collinsia parviflora var. grandiflora]
                                             Collinsia greenei
                                             Collinsia heterophylla
                                               Collinsia heterophylla var. austromontana
                                                     [Collinsia austromontana]
                                               Collinsia heterophylla var. heterophylla
                                             Collinsia hibernica
                                             Collinsia holmgreni
                                             Collinsia holmi
                                             Collinsia inerrans
                                             Collinsia ksenia
                                             Collinsia linearis
                                                   [Collinsia rattanii var. linearis]
                                             Collinsia multicolor
                                                   [Collinsia franciscana]
                                             Collinsia oatimpa
                                             Collinsia oxypaederotipus
                                             Collinsia palmeni
                                             Collinsia parryi
                                                   [Collinsia antonina ssp. purpurea]
                                             Collinsia parviflora
                                                   [Antirrhinum tenellum]
                                                   [Collinsia grandiflora var. pusilla]
                                                   [Collinsia parviflora var. parviflora]
                                                   [Collinsia tenella]
                                             Collinsia parvula
                                             Collinsia perplexa
                                             Collinsia pertinens
                                             Collinsia plumosa
                                             Collinsia probata
                                             Collinsia rattanii
                                               Collinsia rattanii ssp. glandulosa
                                               Collinsia rattanii ssp. rattanii
                                             Collinsia sachalinensis
                                             Collinsia solitaria
                                             Collinsia sparsiflora
                                               Collinsia sparsiflora var. arvensis
                                               Collinsia sparsiflora var. bruceae
                                                     [Collinsia bruceae]
                                               Collinsia sparsiflora var. collina
                                                     [Collinsia solitaria]
                                               Collinsia sparsiflora var. sparsiflora
                                             Collinsia spetsbergensis
                                             Collinsia stylifera
                                             Collinsia thulensis
                                             Collinsia tianschanica
                                             Collinsia tinctoria
                                             Collinsia torreyi
                                               Collinsia torreyi var. brevicarinata
                                               Collinsia torreyi var. latifolia
                                               Collinsia torreyi var. torreyi
                                               Collinsia torreyi var. wrightii
                                                     [Collinsia wrightii]
                                             Collinsia verna
                                             Collinsia violacea
                                             Collinsia wrightii
                                     Conobea
                                     Cymbalaria
                                             Cymbalaria muralis
                                                   [Linaria cymbalaria]
                                     Digitalis
                                             Digitalis ferruginea
                                             Digitalis grandiflora
                                                   [Digitalis ambigua]
                                                   [Digitalis orientalis]
                                             Digitalis lanata
                                             Digitalis lutea
                                             Digitalis mariana
                                               Digitalis mariana ssp. heywoodii
                                                     [Digitalis purpurea ssp. heywoodii]
                                             Digitalis purpurea
                                                   [Digitalis purpurea var. alba]
                                               Digitalis purpurea ssp. amandiana
                                                     [Digitalis purpurea var. amandiana]
                                               Digitalis purpurea ssp. purpurea
                                                     [Digitalis purpurea var. purpurea]
                                                     [Digitalis purpurea var. tomentosa]
                                     Dopatrium
                                             Dopatrium junceum
                                     Epixiphium
                                             Epixiphium wislizeni
                                                   [Antirrhinum wislizeni]
                                                   [Asarina wislizeni]
                                                   [Maurandya wislizeni]
                                                   [Maurandya wislizenii]
                                     Erinus
                                             Erinus alpinus
                                     Galvezia
                                     Gambelia
                                             Gambelia copeii
                                                   [Gambelia wislizenii copeii]
                                             Gambelia sila
                                                   [Crotaphytus silus]
                                                   [Crotaphytus wislizenii silus]
                                                   [Gambelia silus]
                                                   [Gambelia wislizenii silus]
                                             Gambelia speciosa
                                                   [Galvezia speciosa]
                                             Gambelia wislizenii
                                                   [Crotaphytus wislizenii wislizenii]
                                                   [Gambelia wislizenii maculosa]
                                                   [Gambelia wislizenii punctata]
                                                   [Gambelia wislizenii wislizenii]
                                     Globifera
                                     Gratiola
                                             Gratiola amphiantha
                                                   [Amphianthus pusillus]
                                             Gratiola aurea
                                                   [Gratiola aurea var. obtusa]
                                                   [Gratiola lutea]
                                             Gratiola brevifolia
                                             Gratiola ebracteata
                                             Gratiola flava
                                             Gratiola floridana
                                             Gratiola graniticola
                                             Gratiola heterosepala
                                             Gratiola hispida
                                                   [Gratiola subulata]
                                                   [Sophronanthe hispida]
                                             Gratiola involucrata
                                             Gratiola montana
                                             Gratiola neglecta
                                                   [Gratiola neglecta var. glaberrima]
                                             Gratiola officinalis
                                             Gratiola pilosa
                                                   [Gratiola pilosa var. epilis]
                                                   [Sophronanthe pilosa]
                                                   [Tragiola pilosa ssp. epilis]
                                                   [Tragiola pilosa]
                                             Gratiola quartermaniae
                                             Gratiola ramosa
                                             Gratiola sphaerocarpa
                                             Gratiola virginiana
                                               Gratiola virginiana var. aestuariorum
                                               Gratiola virginiana var. virginiana
                                                     [Gratiola sphaerocarpa]
                                             Gratiola viscidula
                                                   [Gratiola viscidula ssp. shortii]
                                                   [Gratiola viscidula ssp. viscidula]
                                                   [Gratiola viscidula var. shortii]
                                                   [Gratiola viscosa]
                                     Hebe
                                             Hebe X franciscana
                                                   [Veronica decussata]
                                                   [Veronica franciscana]
                                             Hebe speciosa
                                                   [Veronica speciosa]
                                             Hebe venustula
                                     Herpestis
                                     Hippuris
                                             Hippuris lanceolata
                                             Hippuris montana
                                             Hippuris tetraphylla
                                             Hippuris vulgaris
                                     Holmgrenanthe
                                             Holmgrenanthe petrophila
                                                   [Asarina petrophila]
                                                   [Maurandella petrophila]
                                                   [Maurandya petrophila]
                                     Hottonia
                                             Hottonia inflata
                                     Howelliella
                                             Howelliella ovata
                                                   [Antirrhinum ovatum]
                                     Hydranthelium
                                     Hydrotrida
                                     Keckiella
                                             Keckiella antirrhinoides
                                               Keckiella antirrhinoides ssp. antirrhinoides
                                                     [Keckiella antirrhinoides var. antirrhinoides]
                                                     [Penstemon antirrhinoides]
                                               Keckiella antirrhinoides ssp. microphylla
                                                     [Keckiella antirrhinoides var. microphylla]
                                                     [Penstemon antirrhinoides ssp. microphyllus]
                                                     [Penstemon microphyllus]
                                             Keckiella breviflora
                                               Keckiella breviflora ssp. breviflora
                                                     [Keckiella breviflora var. breviflora]
                                                     [Penstemon breviflorus]
                                               Keckiella breviflora ssp. glabrisepala
                                                     [Keckiella breviflora var. glabrisepala]
                                                     [Penstemon breviflorus ssp. glabrisepalus]
                                             Keckiella cordifolia
                                                   [Penstemon cordifolius]
                                             Keckiella corymbosa
                                                   [Penstemon corymbosus]
                                             Keckiella lemmonii
                                                   [Penstemon lemmonii]
                                             Keckiella rothrockii
                                               Keckiella rothrockii ssp. jacintensis
                                                     [Keckiella rothrockii var. jacintensis]
                                                     [Penstemon rothrockii ssp. jacintensis]
                                               Keckiella rothrockii ssp. rothrockii
                                                     [Keckiella rothrockii var. rothrockii]
                                                     [Penstemon rothrockii]
                                             Keckiella ternata
                                               Keckiella ternata ssp. septentrionalis
                                                     [Keckiella ternata var. septentrionalis]
                                                     [Penstemon ternatus ssp. septentrionalis]
                                               Keckiella ternata ssp. ternata
                                                     [Keckiella ternata var. ternata]
                                                     [Penstemon ternatus]
                                     Kickxia
                                             Kickxia elatine
                                                   [Antirrhinum elatine]
                                                   [Linaria elatine]
                                             Kickxia spuria
                                                   [Antirrhinum spurium]
                                     Lagotis
                                             Lagotis glauca
                                               Lagotis glauca ssp. glauca
                                                     [Lagotis glauca var. glauca]
                                               Lagotis glauca ssp. lanceolata
                                                     [Lagotis glauca ssp. minor]
                                                     [Lagotis glauca var. stelleri]
                                                     [Lagotis minor]
                                                     [Lagotis stelleri]
                                             Lagotis minor
                                             Lagotis stelleri
                                     Leiostemon
                                             Leiostemon ambiguus
                                     Leptandra
                                     Leucospora
                                             Leucospora multifida
                                                   [Conobea multifida]
                                     Limosella
                                             Limosella acaulis
                                             Limosella aquatica
                                             Limosella australis
                                                   [Limosella aquatica var. tenuifolia]
                                                   [Limosella subulata]
                                             Limosella pubiflora
                                     Linaria
                                             Linaria X hybrida
                                             Linaria X sepium
                                             Linaria aeruginea
                                             Linaria angustissima
                                                   [Linaria italica]
                                             Linaria bipartita
                                             Linaria cannabina
                                                   [Acanthis cannabina]
                                                   [Carduelis cannabina]
                                                   [Fringilla cannabina]
                                               Linaria cannabina autochthona
                                                     [Carduelis cannabina autochthona]
                                               Linaria cannabina bella
                                                     [Carduelis cannabina bella]
                                               Linaria cannabina cannabina
                                                     [Carduelis cannabina cannabina]
                                               Linaria cannabina guentheri
                                                     [Carduelis cannabina guentheri]
                                               Linaria cannabina harterti
                                                     [Carduelis cannabina harterti]
                                               Linaria cannabina meadewaldoi
                                                     [Carduelis cannabina meadewaldoi]
                                               Linaria cannabina mediterranea
                                                     [Carduelis cannabina mediterranea]
                                             Linaria dalmatica
                                               Linaria dalmatica ssp. dalmatica
                                                     [Linaria genistifolia ssp. dalmatica]
                                                     [Linaria jattae]
                                               Linaria dalmatica ssp. macedonica
                                                     [Linaria dalmatica var. macedonica]
                                                     [Linaria macedonica]
                                             Linaria flavirostris
                                                   [Carduelis flavirostris]
                                               Linaria flavirostris altaica
                                                     [Carduelis flavirostris altiaca]
                                               Linaria flavirostris bensonorum
                                                     [Carduelis flavirostris bensonorum]
                                               Linaria flavirostris brevirostris
                                                     [Carduelis flavirostris brevirostris]
                                               Linaria flavirostris flavirostris
                                                     [Carduelis flavirostris flavirostris]
                                               Linaria flavirostris kirghizorum
                                                     [Carduelis flavirostris kirghizorum]
                                               Linaria flavirostris korejevi
                                                     [Carduelis flavirostris korejevi]
                                               Linaria flavirostris miniakensis
                                                     [Carduelis flavirostris miniakensis]
                                               Linaria flavirostris montanella
                                                     [Carduelis flavirostris montanella]
                                               Linaria flavirostris pamirensis
                                                     [Carduelis flavirostris pamirensis]
                                               Linaria flavirostris pipilans
                                                     [Carduelis flavirostris pipilans]
                                               Linaria flavirostris rufostrigata
                                                     [Carduelis flavirostris rufostrigata]
                                             Linaria genistifolia
                                               Linaria genistifolia ssp. genistifolia
                                                     [Linaria genistifolia var. genistifolia]
                                             Linaria granidflora
                                             Linaria incarnata
                                             Linaria jattae
                                             Linaria johannis
                                                   [Acanthis johannis]
                                                   [Carduelis johannis]
                                                   [Warsanglia johannis]
                                             Linaria macedonica
                                             Linaria maroccana
                                             Linaria pinifolia
                                             Linaria purpurea
                                             Linaria repens
                                             Linaria reticulata
                                             Linaria spartea
                                             Linaria supina
                                               Linaria supina ssp. supina
                                             Linaria vulgaris
                                                   [Linaria linaria]
                                             Linaria yemenensis
                                                   [Acanthis yemenensis]
                                                   [Carduelis yemenensis]
                                                   [Pseudacanthis yemenensis]
                                     Lindernia
                                           [Ilysanthes]
                                             Lindernia antipoda
                                                   [Ruellia antipoda]
                                             Lindernia brucei
                                             Lindernia ciliata
                                             Lindernia crustacea
                                                   [Capraria crustacea]
                                                   [Lindernia crustacea var. smithii]
                                                   [Torenia crustacea]
                                             Lindernia diffusa
                                                   [Vandellia diffusa]
                                             Lindernia dubia
                                                   [Gratiola dubia]
                                                   [Ilysanthes anagallidea]
                                                   [Ilysanthes attenuata]
                                                   [Ilysanthes dubia]
                                                   [Ilysanthes inequalis]
                                                   [Lindernia anagallidea]
                                                   [Lindernia dubia var. anagallidea]
                                                   [Lindernia dubia var. dubia]
                                                   [Lindernia dubia var. inundata]
                                                   [Lindernia dubia var. major]
                                                   [Lindernia dubia var. riparia]
                                                   [Lindernia dubia var. typica]
                                                   [Lindernia pyxidaria]
                                             Lindernia ellobum
                                             Lindernia grandiflora
                                                   [Ilysanthes grandiflora]
                                             Lindernia monticola
                                                   [Ilysanthes monticola]
                                                   [Ilysanthes saxicola]
                                                   [Lindernia saxicola]
                                             Lindernia procumbens
                                                   [Lindernia probescens]
                                     Littorella
                                             Littorella uniflora
                                                   [Littorella americana]
                                                   [Littorella uniflora var. americana]
                                     Lophospermum
                                             Lophospermum erubescens
                                                   [Asarina erubescens]
                                     Lysimachia
                                           [Glaux]
                                             Lysimachia X commixta
                                             Lysimachia X producta
                                             Lysimachia X radfordii
                                             Lysimachia angusta
                                             Lysimachia arta
                                             Lysimachia asperulifolia
                                                   [Lysimachia asperulaefolia]
                                             Lysimachia attenuata
                                             Lysimachia barystachys
                                             Lysimachia ciliata
                                                   [Steironema ciliatum]
                                                   [Steironema pumilum]
                                             Lysimachia ciliolata
                                             Lysimachia clethroides
                                             Lysimachia daphnoides
                                                   [Lysimachia kahiliensis]
                                                   [Lysimachia longa]
                                             Lysimachia elliptica
                                             Lysimachia fauriei
                                             Lysimachia filifolia
                                                   [Lysimachia funkiae]
                                                   [Lysimachia waiaholeensis]
                                             Lysimachia forbesii
                                                   [Lysimachiopsis forbesii]
                                             Lysimachia fraseri
                                             Lysimachia furcata
                                             Lysimachia glutinosa
                                                   [Lysimachia fayi]
                                                   [Lysimachia olokeleensis]
                                             Lysimachia graminea
                                                   [Steironema gramineum]
                                             Lysimachia hillebrandii
                                                   [Lysimachia haupuensis]
                                                   [Lysimachia macdanielsii]
                                                   [Lysimachia mannii]
                                                   [Lysimachia ovata]
                                                   [Lysimachia ovoidea]
                                                   [Lysimachia rubrimaculata]
                                                   [Lysimachia russii]
                                                   [Lysimachia stenophylla]
                                                   [Lysimachia waianaeensis]
                                                   [Lysimachia waiehuensis]
                                                   [Lysimachia websteri]
                                             Lysimachia hybrida
                                                   [Lysimachia ciliata var. validula]
                                                   [Lysimachia lanceolata ssp. hybrida]
                                                   [Lysimachia lanceolata var. hybrida]
                                                   [Steironema hybridum]
                                                   [Steironema laevigatum]
                                                   [Steironema lanceolatum var. hybridum]
                                             Lysimachia iniki
                                             Lysimachia japonica
                                             Lysimachia kalalauensis
                                                   [Lysimachia hanapepeensis]
                                                   [Lysimachia hillebrandii var. helleri]
                                                   [Lysimachia kalaluensis]
                                                   [Lysimachia lamiatilis]
                                                   [Lysimachiopsis helleri]
                                             Lysimachia kalaupapaensis
                                             Lysimachia kipahuluensis
                                             Lysimachia kukuiensis
                                             Lysimachia lanceolata
                                                   [Lysimachia lanceolata var. angustifolia]
                                                   [Steironema heterophyllum]
                                                   [Steironema lanceolatum]
                                             Lysimachia lata
                                             Lysimachia loomisii
                                             Lysimachia lydgatei
                                             Lysimachia maritima
                                                   [Glaux maritima ssp. maritima]
                                                   [Glaux maritima ssp. obtusifolia]
                                                   [Glaux maritima var. angustifolia]
                                                   [Glaux maritima var. macrophylla]
                                                   [Glaux maritima var. obtusifolia]
                                                   [Glaux maritima]
                                             Lysimachia mauritiana
                                             Lysimachia maxima
                                                   [Lysimachia hillebrandii var. maxima]
                                                   [Lysimachia ternifolia]
                                             Lysimachia molokaiensis
                                             Lysimachia mucronata
                                             Lysimachia munroi
                                             Lysimachia nummularia
                                             Lysimachia occidentalis
                                             Lysimachia pedicellata
                                             Lysimachia pendens
                                             Lysimachia pentophylla
                                             Lysimachia pilosula
                                             Lysimachia punctata
                                                   [Lysimachia punctata var. verticillata]
                                             Lysimachia quadriflora
                                                   [Lysimachia longifolia]
                                                   [Steironema quadriflorum]
                                             Lysimachia quadrifolia
                                             Lysimachia radicans
                                                   [Nummularia radicans]
                                                   [Steironema radicans]
                                             Lysimachia remyi
                                               Lysimachia remyi ssp. caliginis
                                                     [Lysimachia kukuiensis]
                                                     [Lysimachia pentophylla]
                                               Lysimachia remyi ssp. kipahuluensis
                                                     [Lysimachia angusta]
                                                     [Lysimachia arta]
                                                     [Lysimachia furcata]
                                                     [Lysimachia kipahuluensis]
                                               Lysimachia remyi ssp. remyi
                                                     [Lysimachia ciliolata]
                                                     [Lysimachia elliptica]
                                                     [Lysimachia hillebrandii var. angustifolia]
                                                     [Lysimachia lata]
                                                     [Lysimachia occidentalis]
                                                     [Lysimachia pedicellata]
                                                     [Lysimachia pilosula]
                                                     [Lysimachia scansoria]
                                                     [Lysimachia stene]
                                                     [Lysimachiopsis angustifolia]
                                               Lysimachia remyi ssp. subherbacea
                                                     [Lysimachia attenuata]
                                                     [Lysimachia fauriei]
                                                     [Lysimachia hillebrandii var. subherbacea]
                                                     [Lysimachia kalaupapaensis]
                                                     [Lysimachia molokaiensis]
                                                     [Lysimachia mucronata]
                                                     [Lysimachia munroi]
                                                     [Lysimachia rockii]
                                                     [Lysimachia rufa]
                                                     [Lysimachia subherbacea]
                                                     [Lysimachia waikoluensis]
                                             Lysimachia rockii
                                             Lysimachia rufa
                                             Lysimachia saurauifolia
                                             Lysimachia scansoria
                                             Lysimachia scopulensis
                                             Lysimachia stene
                                             Lysimachia subherbacea
                                             Lysimachia tenella
                                             Lysimachia terrestris
                                                   [Lysimachia terrestris var. ovata]
                                             Lysimachia thyrsiflora
                                                   [Naumburgia thyrsiflora]
                                             Lysimachia tonsa
                                                   [Lysimachia tonsa var. simplex]
                                                   [Steironema intermedium]
                                                   [Steironema tonsum]
                                             Lysimachia venosa
                                                   [Lysimachia hillebrandii var. venosa]
                                                   [Lysimachiopsis venosa]
                                             Lysimachia verticillata
                                             Lysimachia vulgaris
                                             Lysimachia waikoluensis
                                     Mabrya
                                             Mabrya acerifolia
                                                   [Asarina acerifolia]
                                                   [Maurandya acerifolia]
                                     Macuillamia
                                     Maurandella
                                             Maurandella antirrhiniflora
                                                   [Antirrhinum maurandioides]
                                                   [Asarina antirrhiniflora]
                                                   [Maurandya antirrhiniflora]
                                     Maurandya
                                             Maurandya barclaiana
                                     Mecardonia
                                             Mecardonia acuminata
                                               Mecardonia acuminata var. acuminata
                                                     [Bacopa acuminata]
                                                     [Pagesia acuminata]
                                               Mecardonia acuminata var. microphylla
                                                     [Bacopa acuminata var. microphylla]
                                               Mecardonia acuminata var. peninsularis
                                             Mecardonia procumbens
                                                   [Bacopa procumbens]
                                                   [Mecardonia dianthera]
                                                   [Mecardonia peduncularis]
                                                   [Mecardonia tenuis]
                                                   [Mecardonia vandellioides]
                                     Micranthemum
                                           [Hemianthus]
                                             Micranthemum callitrichoides
                                             Micranthemum glomeratum
                                                   [Hemianthus glomeratus]
                                             Micranthemum micranthemoides
                                                   [Hemianthus micranthemoides]
                                             Micranthemum umbrosum
                                                   [Globifera umbrosa]
                                                   [Hemianthus callitrichoides]
                                     Misopates
                                             Misopates orontium
                                                   [Antirrhinum orontium var. grandiflorum]
                                                   [Antirrhinum orontium]
                                     Mohavea
                                             Mohavea breviflora
                                             Mohavea confertiflora
                                     Neogaerrhinum
                                             Neogaerrhinum filipes
                                                   [Antirrhinum cooperi]
                                                   [Antirrhinum filipes]
                                                   [Asarina filipes]
                                             Neogaerrhinum strictum
                                                   [Antirrhinum hookerianum]
                                                   [Antirrhinum kelloggii]
                                                   [Asarina stricta]
                                                   [Neogaerrhinum kelloggii]
                                     Nothochelone
                                             Nothochelone nemorosa
                                                   [Penstemon nemorosus]
                                     Nuttallanthus
                                             Nuttallanthus canadensis
                                                   [Linaria canadensis]
                                             Nuttallanthus floridanus
                                                   [Linaria floridana]
                                             Nuttallanthus texanus
                                                   [Linaria canadensis var. texana]
                                                   [Linaria texana]
                                     Pagesia
                                             Pagesia acuminata
                                     Penstemon
                                             Penstemon X bryantiae
                                                   [Penstemon bryantiae]
                                             Penstemon X crideri
                                             Penstemon X dubius
                                             Penstemon X jonesii
                                                   [Penstemon jonesi]
                                             Penstemon X mirus
                                             Penstemon X parishii
                                             Penstemon X peirsonii
                                             Penstemon abietinus
                                             Penstemon absarokensis
                                             Penstemon acaulis
                                             Penstemon acuminatus
                                               Penstemon acuminatus var. acuminatus
                                               Penstemon acuminatus var. latebracteatus
                                             Penstemon aggregatus
                                             Penstemon alamosensis
                                             Penstemon albertinus
                                             Penstemon albidus
                                             Penstemon albifluvis
                                             Penstemon albomarginatus
                                                   [Penstemon albomarginalis]
                                             Penstemon alpinus
                                             Penstemon ambiguus
                                               Penstemon ambiguus var. ambiguus
                                                     [Leiostemon ambiguus]
                                               Penstemon ambiguus var. laevissimus
                                                     [Penstemon ambiguus ssp. laevissimus]
                                             Penstemon ammophilus
                                                   [Penstemon ammophilum]
                                             Penstemon anguineus
                                                   [Penstemon rattanii var. minor]
                                             Penstemon angustifolius
                                               Penstemon angustifolius var. angustifolius
                                               Penstemon angustifolius var. caudatus
                                                     [Penstemon angustifolius ssp. caudatus]
                                                     [Penstemon caudatus]
                                               Penstemon angustifolius var. dulcis
                                               Penstemon angustifolius var. venosus
                                                     [Penstemon angustifolius ssp. venosus]
                                                     [Penstemon venosus]
                                               Penstemon angustifolius var. vernalensis
                                             Penstemon antirrhinoides
                                             Penstemon arenarius
                                                   [Penstemon maguirei]
                                             Penstemon arenicola
                                             Penstemon aridus
                                             Penstemon arkansanus
                                                   [Penstemon multicaulis]
                                                   [Penstemon pallidus ssp. arkansanus]
                                                   [Penstemon wherryi]
                                             Penstemon assurgens
                                             Penstemon attenuatus
                                               Penstemon attenuatus var. attenuatus
                                               Penstemon attenuatus var. militaris
                                                     [Penstemon assurgens]
                                                     [Penstemon attenuatus ssp. militaris]
                                               Penstemon attenuatus var. palustris
                                                     [Penstemon attenuatus ssp. palustris]
                                               Penstemon attenuatus var. pseudoprocerus
                                                     [Penstemon attenuatus ssp. pseudoprocerus]
                                             Penstemon atwoodii
                                             Penstemon auriberbis
                                                   [Penstemon parviflorus]
                                             Penstemon australis
                                                   [Penstemon australis ssp. australis]
                                             Penstemon azureus
                                               Penstemon azureus var. angustissimus
                                                     [Penstemon azureus ssp. angustissimus]
                                               Penstemon azureus var. azureus
                                                     [Penstemon azureus ssp. azureus]
                                             Penstemon baccharifolius
                                             Penstemon barbatus
                                               Penstemon barbatus var. barbatus
                                                     [Penstemon barbatus ssp. barbatus]
                                                     [Penstemon barbatus var. puberulus]
                                               Penstemon barbatus var. torreyi
                                                     [Penstemon barbatus ssp. torreyi]
                                                     [Penstemon torreyi]
                                               Penstemon barbatus var. trichander
                                                     [Penstemon barbatus ssp. trichander]
                                                     [Penstemon barbatus var. trichanderi]
                                             Penstemon barnebyi
                                             Penstemon barrettiae
                                             Penstemon bicolor
                                                   [Penstemon bicolor ssp. bicolor]
                                                   [Penstemon bicolor ssp. roseus]
                                             Penstemon bracteatus
                                             Penstemon brandegeei
                                             Penstemon breviculus
                                                   [Penstemon jamesii ssp. breviculus]
                                             Penstemon breviflorus
                                             Penstemon brevisepalus
                                             Penstemon buckleyi
                                             Penstemon caesius
                                             Penstemon caespitosus
                                               Penstemon caespitosus var. caespitosus
                                               Penstemon caespitosus var. desertipicti
                                                     [Penstemon caespitosus ssp. desertipicti]
                                               Penstemon caespitosus var. perbrevis
                                                     [Penstemon caespitosus ssp. perbrevis]
                                             Penstemon calcareus
                                             Penstemon californicus
                                             Penstemon calycosus
                                                   [Penstemon laevigatus ssp. calycosus]
                                             Penstemon campanulatus
                                                   [Penstemon campanulatus f. pulchellus]
                                                   [Penstemon pulchellus]
                                               Penstemon campanulatus var. chihuahuensis
                                                     [Penstemon campanulatus ssp. chihuahuensis]
                                             Penstemon canescens
                                                   [Penstemon brittoniorum]
                                                   [Penstemon canescens var. brittoniorum]
                                                   [Penstemon canescens var. typicus]
                                             Penstemon cardinalis
                                               Penstemon cardinalis ssp. cardinalis
                                               Penstemon cardinalis ssp. regalis
                                             Penstemon cardwellii
                                             Penstemon carnosus
                                             Penstemon caryi
                                             Penstemon caudatus
                                             Penstemon centranthifolius
                                             Penstemon cinereus
                                             Penstemon cinicola
                                             Penstemon cleburnei
                                             Penstemon clevelandii
                                                   [Penstemon cleavelandii]
                                               Penstemon clevelandii var. clevelandii
                                                     [Penstemon cleavelandii var. cleavelandii]
                                                     [Penstemon clevelandii ssp. clevelandii]
                                               Penstemon clevelandii var. connatus
                                                     [Penstemon cleavelandii var. connatus]
                                                     [Penstemon clevelandii ssp. connatus]
                                               Penstemon clevelandii var. mohavensis
                                                     [Penstemon cleavelandii var. mohavensis]
                                                     [Penstemon clevelandii ssp. mohavensis]
                                             Penstemon clutei
                                             Penstemon cobaea
                                               Penstemon cobaea var. cobaea
                                                     [Penstemon cobaea ssp. typicus]
                                               Penstemon cobaea var. purpureus
                                                     [Penstemon cobaea ssp. purpureus]
                                             Penstemon coloradoensis
                                             Penstemon comarrhenus
                                             Penstemon compactus
                                                   [Penstemon cyananthus ssp. compactus]
                                                   [Penstemon cyananthus var. compactus]
                                             Penstemon concinnus
                                             Penstemon confertus
                                             Penstemon confusus
                                             Penstemon congestus
                                             Penstemon crandallii
                                               Penstemon crandallii ssp. atratus
                                                     [Penstemon crandallii var. atractus]
                                                     [Penstemon crandallii var. atratus]
                                               Penstemon crandallii ssp. crandallii
                                                     [Penstemon suffrutescens]
                                               Penstemon crandallii ssp. glabrescens
                                                     [Penstemon crandallii ssp. taosensis]
                                                     [Penstemon crandallii var. glabrescens]
                                                     [Penstemon linarioides ssp. taosensis]
                                               Penstemon crandallii ssp. procumbens
                                             Penstemon cusickii
                                             Penstemon cyananthus
                                               Penstemon cyananthus var. cyananthus
                                               Penstemon cyananthus var. judyae
                                               Penstemon cyananthus var. subglaber
                                                     [Penstemon cyananthus ssp. subglaber]
                                                     [Penstemon holmgrenii]
                                             Penstemon cyaneus
                                             Penstemon cyanocaulis
                                             Penstemon cyathophorus
                                             Penstemon dasyphyllus
                                             Penstemon davidsonii
                                               Penstemon davidsonii var. davidsonii
                                                     [Penstemon menziesii ssp. davidsonii]
                                                     [Penstemon menziesii ssp. thompsonii]
                                               Penstemon davidsonii var. menziesii
                                                     [Penstemon davidsonii ssp. menziesii]
                                                     [Penstemon menziesii]
                                               Penstemon davidsonii var. praeteritus
                                             Penstemon deamii
                                                   [Penstemon laevigatus ssp. deamii]
                                                   [Penstemon laevigatus var. deamii]
                                             Penstemon deaveri
                                                   [Penstemon virgatus ssp. arizonicus]
                                             Penstemon debilis
                                             Penstemon decurvus
                                             Penstemon degeneri
                                             Penstemon deustus
                                               Penstemon deustus var. deustus
                                               Penstemon deustus var. pedicellatus
                                                     [Penstemon deustus ssp. heterander]
                                                     [Penstemon deustus var. heterander]
                                               Penstemon deustus var. suffrutescens
                                               Penstemon deustus var. variabilis
                                                     [Penstemon deustus ssp. variabilis]
                                                     [Penstemon variabilis]
                                             Penstemon digitalis
                                                   [Penstemon alluviorum]
                                                   [Penstemon laevigatus ssp. alluviorum]
                                                   [Penstemon laevigatus ssp. digitalis]
                                                   [Penstemon laevigatus var. angulatus]
                                             Penstemon diphyllus
                                                   [Penstemon triphyllus ssp. diphyllus]
                                             Penstemon discolor
                                             Penstemon dissectus
                                             Penstemon distans
                                             Penstemon dolius
                                                   [Penstemon dolius var. dolius]
                                             Penstemon duchesnensis
                                                   [Penstemon dolius var. duchesnensis]
                                             Penstemon eatonii
                                               Penstemon eatonii ssp. eatonii
                                                     [Penstemon eatonii var. eatonii]
                                               Penstemon eatonii ssp. exsertus
                                               Penstemon eatonii ssp. undosus
                                                     [Penstemon eatonii var. undosus]
                                             Penstemon elegantulus
                                             Penstemon ellipticus
                                                   [Penstemon davidsonii var. ellipticus]
                                             Penstemon eriantherus
                                               Penstemon eriantherus var. argillosus
                                                     [Penstemon whitedii ssp. dayanus]
                                               Penstemon eriantherus var. cleburnei
                                                     [Penstemon cleburnei]
                                               Penstemon eriantherus var. eriantherus
                                               Penstemon eriantherus var. redactus
                                                     [Penstemon whitedii ssp. tristis]
                                               Penstemon eriantherus var. whitedii
                                                     [Penstemon whitedii]
                                             Penstemon euglaucus
                                             Penstemon fendleri
                                             Penstemon filiformis
                                             Penstemon flavescens
                                             Penstemon floribundus
                                             Penstemon floridus
                                               Penstemon floridus var. austinii
                                                     [Penstemon floridus ssp. austinii]
                                               Penstemon floridus var. floridus
                                             Penstemon flowersii
                                             Penstemon francisci-pennellii
                                             Penstemon franklinii
                                             Penstemon fremontii
                                               Penstemon fremontii var. fremontii
                                               Penstemon fremontii var. glabrescens
                                             Penstemon fruticiformis
                                               Penstemon fruticiformis var. amargosae
                                                     [Penstemon fruticiformis ssp. amargosae]
                                               Penstemon fruticiformis var. fruticiformis
                                                     [Penstemon fruticiformis ssp. fruticiformis]
                                             Penstemon fruticosus
                                               Penstemon fruticosus var. fruticosus
                                               Penstemon fruticosus var. scouleri
                                                     [Penstemon fruticosus ssp. scouleri]
                                                     [Penstemon scouleri]
                                               Penstemon fruticosus var. serratus
                                                     [Penstemon fruticosus ssp. serratus]
                                             Penstemon gairdneri
                                               Penstemon gairdneri var. gairdneri
                                                     [Penstemon gairdneri ssp. hians]
                                                     [Penstemon gairdneri var. hians]
                                               Penstemon gairdneri var. oreganus
                                                     [Penstemon gairdneri ssp. oreganus]
                                                     [Penstemon puberulentus]
                                             Penstemon garrettii
                                             Penstemon gentianoides
                                             Penstemon gibbensii
                                             Penstemon glaber
                                               Penstemon glaber var. alpinus
                                                     [Penstemon alpinus var. alpinus]
                                                     [Penstemon alpinus]
                                               Penstemon glaber var. brandegeei
                                                     [Penstemon alpinus ssp. brandegeei]
                                                     [Penstemon brandegeei]
                                               Penstemon glaber var. glaber
                                                     [Penstemon alpinus ssp. magnus]
                                                     [Penstemon alpinus var. nagnus]
                                             Penstemon glandulosus
                                               Penstemon glandulosus var. chelanensis
                                                     [Penstemon glandulosus ssp. chelanensis]
                                               Penstemon glandulosus var. glandulosus
                                             Penstemon glaucinus
                                             Penstemon globosus
                                             Penstemon goodrichii
                                             Penstemon gormanii
                                             Penstemon gracilentus
                                             Penstemon gracilis
                                                   [Penstemon glaucus]
                                                   [Penstemon gracilis ssp. wisconsinensis]
                                                   [Penstemon gracilis var. gracilis]
                                                   [Penstemon gracilis var. wisconsinensis]
                                                   [Penstemon wisconsinensis]
                                             Penstemon grahamii
                                             Penstemon grandiflorus
                                                   [Penstemon bradburii]
                                             Penstemon griffinii
                                             Penstemon grinnellii
                                                   [Penstemon grinnellii ssp. grinnellii]
                                                   [Penstemon grinnellii ssp. scrophularioides]
                                                   [Penstemon grinnellii var. grinnellii]
                                                   [Penstemon grinnellii var. scrophularioides]
                                             Penstemon guadalupensis
                                                   [Penstemon guadalupensis var. ernstii]
                                             Penstemon hallii
                                             Penstemon harbourii
                                             Penstemon harringtonii
                                                   [Penstemon harringtoni]
                                             Penstemon hartwegii
                                             Penstemon havardii
                                                   [Penstemon harvardii]
                                             Penstemon haydenii
                                             Penstemon helleri
                                             Penstemon hesperius
                                             Penstemon heterodoxus
                                               Penstemon heterodoxus var. cephalophorus
                                                     [Penstemon heterodoxus ssp. cephalophorus]
                                               Penstemon heterodoxus var. heterodoxus
                                                     [Penstemon heterodoxus ssp. heterodoxus]
                                               Penstemon heterodoxus var. shastensis
                                                     [Penstemon shastensis]
                                             Penstemon heterophyllus
                                               Penstemon heterophyllus var. australis
                                                     [Penstemon heterophyllus ssp. australis]
                                               Penstemon heterophyllus var. heterophyllus
                                                     [Penstemon heterophyllus ssp. heterophyllus]
                                               Penstemon heterophyllus var. purdyi
                                                     [Penstemon heterophyllus ssp. purdyi]
                                                     [Penstemon spinulosus]
                                             Penstemon hirsutus
                                                   [Penstemon hirsutus var. hirsutus]
                                                   [Penstemon hirsutus var. minimus]
                                                   [Penstemon hirsutus var. pygmaeus]
                                             Penstemon holmgrenii
                                             Penstemon humilis
                                               Penstemon humilis var. brevifolius
                                                     [Penstemon humilis ssp. brevifolius]
                                               Penstemon humilis var. humilis
                                                     [Penstemon cinereus ssp. foliatus]
                                                     [Penstemon cinereus var. foliatus]
                                                     [Penstemon cinereus]
                                                     [Penstemon decurvus]
                                                     [Penstemon humilis ssp. humilis]
                                                     [Penstemon humilis var. deserticus]
                                               Penstemon humilis var. obtusifolius
                                                     [Penstemon humilis ssp. obtusifolius]
                                             Penstemon idahoensis
                                             Penstemon immanifestus
                                             Penstemon incertus
                                             Penstemon inflatus
                                             Penstemon jamesii
                                                   [Penstemon brevibarbatus]
                                                   [Penstemon jamesii ssp. typicus]
                                                   [Penstemon jamesii var. jamesii]
                                             Penstemon janishiae
                                             Penstemon keckii
                                             Penstemon kingii
                                                   [Penstemon nyeensis]
                                             Penstemon labrosus
                                             Penstemon laetus
                                               Penstemon laetus var. laetus
                                                     [Penstemon laetus ssp. laetus]
                                               Penstemon laetus var. leptosepalus
                                                     [Penstemon laetus ssp. leptosepalus]
                                               Penstemon laetus var. sagittatus
                                                     [Penstemon laetus ssp. sagittatus]
                                             Penstemon laevigatus
                                                   [Penstemon penstemon]
                                             Penstemon laevis
                                             Penstemon lanceolatus
                                                   [Penstemon pauciflorus]
                                                   [Penstemon ramosus]
                                             Penstemon laricifolius
                                               Penstemon laricifolius var. exilifolius
                                                     [Penstemon laricifolius ssp. exilifolius]
                                               Penstemon laricifolius var. laricifolius
                                                     [Penstemon laricifolius ssp. laricifolius]
                                             Penstemon laxiflorus
                                                   [Penstemon australis ssp. laxiflorus]
                                                   [Penstemon australis var. ameles]
                                             Penstemon laxus
                                                   [Penstemon watsonii ssp. laxus]
                                             Penstemon leiophyllus
                                               Penstemon leiophyllus var. francisci-pennellii
                                                     [Penstemon francisci-pennellii]
                                               Penstemon leiophyllus var. keckii
                                                     [Penstemon keckii]
                                               Penstemon leiophyllus var. leiophyllus
                                             Penstemon lemhiensis
                                                   [Penstemon speciosus ssp. lemhiensis]
                                             Penstemon lentus
                                               Penstemon lentus var. albiflorus
                                                     [Penstemon lentus ssp. albiflorus]
                                               Penstemon lentus var. lentus
                                             Penstemon leonardii
                                               Penstemon leonardii var. higginsii
                                               Penstemon leonardii var. leonardii
                                               Penstemon leonardii var. patricus
                                                     [Penstemon patricus]
                                             Penstemon linarioides
                                               Penstemon linarioides ssp. coloradoensis
                                                     [Penstemon coloradoensis]
                                               Penstemon linarioides ssp. linarioides
                                                     [Penstemon linarioides ssp. compactifolius]
                                                     [Penstemon linarioides ssp. typicus]
                                               Penstemon linarioides ssp. maguirei
                                               Penstemon linarioides ssp. sileri
                                                     [Penstemon linarioides var. sileri]
                                                     [Penstemon linarioides var. viridis]
                                             Penstemon longiflorus
                                                   [Penstemon cyananthus ssp. longiflorus]
                                                   [Penstemon cyananthus var. longiflorus]
                                             Penstemon lyallii
                                             Penstemon macranthus
                                             Penstemon marcusii
                                                   [Penstemon moffatii ssp. marcusii]
                                             Penstemon mensarum
                                             Penstemon menziesii
                                             Penstemon metcalfei
                                             Penstemon microphyllus
                                             Penstemon miser
                                             Penstemon modestus
                                             Penstemon moffatii
                                                   [Penstemon moffatii ssp. moffatii]
                                                   [Penstemon moffatii ssp. paysonii]
                                             Penstemon monoensis
                                             Penstemon montanus
                                               Penstemon montanus var. idahoensis
                                                     [Penstemon montanus ssp. idahoensis]
                                               Penstemon montanus var. montanus
                                             Penstemon moriahensis
                                             Penstemon mucronatus
                                                   [Penstemon murcronatus]
                                                   [Penstemon pachyphyllus var. mucronatus]
                                             Penstemon multiflorus
                                             Penstemon murrayanus
                                             Penstemon nanus
                                             Penstemon navajoa
                                             Penstemon neomexicanus
                                             Penstemon neotericus
                                             Penstemon newberryi
                                               Penstemon newberryi var. berryi
                                                     [Penstemon newberryi ssp. berryi]
                                               Penstemon newberryi var. newberryi
                                                     [Penstemon newberryi ssp. newberryi]
                                               Penstemon newberryi var. sonomensis
                                                     [Penstemon newberryi ssp. sonomensis]
                                             Penstemon nitidus
                                               Penstemon nitidus var. nitidus
                                               Penstemon nitidus var. polyphyllus
                                                     [Penstemon nitidus ssp. polyphyllus]
                                             Penstemon nudiflorus
                                             Penstemon oklahomensis
                                             Penstemon oliganthus
                                                   [Penstemon pseudoparvus]
                                             Penstemon ophianthus
                                                   [Penstemon jamesii ssp. ophianthus]
                                             Penstemon oreocharis
                                             Penstemon osterhoutii
                                             Penstemon ovatus
                                             Penstemon pachyphyllus
                                               Penstemon pachyphyllus var. congestus
                                                     [Penstemon congestus]
                                                     [Penstemon pachyphyllus ssp. congestus]
                                               Penstemon pachyphyllus var. pachyphyllus
                                             Penstemon pahutensis
                                             Penstemon pallidus
                                                   [Penstemon arkansanus var. pubescens]
                                             Penstemon palmeri
                                               Penstemon palmeri var. eglandulosus
                                                     [Penstemon palmeri ssp. eglandulosus]
                                               Penstemon palmeri var. macranthus
                                                     [Penstemon macranthus]
                                               Penstemon palmeri var. palmeri
                                                     [Penstemon palmeri ssp. typicus]
                                             Penstemon papillatus
                                             Penstemon parryi
                                             Penstemon parvulus
                                                   [Penstemon azureus var. parvulus]
                                             Penstemon parvus
                                             Penstemon patens
                                                   [Penstemon confusus ssp. patens]
                                             Penstemon patricus
                                             Penstemon payettensis
                                             Penstemon paysoniorum
                                             Penstemon peckii
                                             Penstemon penlandii
                                             Penstemon pennellianus
                                             Penstemon perpulcher
                                                   [Penstemon minidokanus]
                                             Penstemon personatus
                                             Penstemon petiolatus
                                             Penstemon pinifolius
                                             Penstemon pinorum
                                             Penstemon platyphyllus
                                             Penstemon pratensis
                                             Penstemon procerus
                                               Penstemon procerus var. aberrans
                                                     [Penstemon procerus ssp. aberrans]
                                               Penstemon procerus var. brachyanthus
                                                     [Penstemon procerus ssp. brachyanthus]
                                                     [Penstemon tolmiei ssp. brachyanthus]
                                               Penstemon procerus var. formosus
                                                     [Penstemon procerus ssp. formosus]
                                                     [Penstemon tolmiei ssp. formosus]
                                               Penstemon procerus var. modestus
                                                     [Penstemon modestus]
                                                     [Penstemon procerus ssp. modestus]
                                               Penstemon procerus var. procerus
                                                     [Penstemon confertus ssp. procerus]
                                                     [Penstemon confertus var. procerus]
                                               Penstemon procerus var. tolmiei
                                                     [Penstemon procerus ssp. tolmiei]
                                                     [Penstemon tolmiei]
                                             Penstemon pruinosus
                                             Penstemon pseudoputus
                                                   [Penstemon virgatus ssp. pseudoputus]
                                             Penstemon pseudospectabilis
                                               Penstemon pseudospectabilis ssp. connatifolius
                                               Penstemon pseudospectabilis ssp. pseudospectabilis
                                                     [Penstemon pseudospectabilis ssp. typicus]
                                             Penstemon puberulentus
                                             Penstemon pudicus
                                             Penstemon pumilus
                                             Penstemon purpusii
                                             Penstemon putus
                                                   [Penstemon virgatus ssp. putus]
                                             Penstemon radicosus
                                             Penstemon rattanii
                                               Penstemon rattanii var. kleei
                                                     [Penstemon rattanii ssp. kleei]
                                               Penstemon rattanii var. rattanii
                                                     [Penstemon rattanii ssp. rattanii]
                                             Penstemon retrorsus
                                                   [Penstemon retrosus]
                                             Penstemon rhizomatosus
                                             Penstemon richardsonii
                                               Penstemon richardsonii var. curtiflorus
                                                     [Penstemon richardsonii ssp. curtiflorus]
                                               Penstemon richardsonii var. dentatus
                                                     [Penstemon richardsonii ssp. dentatus]
                                               Penstemon richardsonii var. richardsonii
                                             Penstemon roezlii
                                                   [Penstemon cinerascens]
                                                   [Penstemon laetus ssp. roezlii]
                                                   [Penstemon laetus var. roezlii]
                                             Penstemon rostriflorus
                                                   [Penstemon bridgesii var. amplexicaulis]
                                                   [Penstemon bridgesii]
                                             Penstemon rothrockii
                                             Penstemon rubicundus
                                             Penstemon rupicola
                                             Penstemon rydbergii
                                               Penstemon rydbergii var. aggregatus
                                                     [Penstemon aggregatus]
                                                     [Penstemon rydbergii ssp. aggregatus]
                                               Penstemon rydbergii var. oreocharis
                                                     [Penstemon hesperius]
                                                     [Penstemon oreocharis]
                                                     [Penstemon vaseyanus]
                                               Penstemon rydbergii var. rydbergii
                                                     [Penstemon rydbergii var. varians]
                                             Penstemon saxosorum
                                             Penstemon scapoides
                                             Penstemon scariosus
                                               Penstemon scariosus var. albifluvis
                                                     [Penstemon albifluvis]
                                               Penstemon scariosus var. cyanomontanus
                                               Penstemon scariosus var. garrettii
                                                     [Penstemon garrettii]
                                               Penstemon scariosus var. scariosus
                                             Penstemon scouleri
                                             Penstemon secundiflorus
                                                   [Penstemon unilateralis]
                                             Penstemon seorsus
                                             Penstemon sepalulus
                                             Penstemon serrulatus
                                             Penstemon shastensis
                                             Penstemon smallii
                                             Penstemon spatulatus
                                             Penstemon speciosus
                                                   [Penstemon speciosus ssp. kennedyi]
                                                   [Penstemon speciosus var. speciosus]
                                             Penstemon spectabilis
                                               Penstemon spectabilis var. spectabilis
                                                     [Penstemon spectabilis ssp. spectabilis]
                                               Penstemon spectabilis var. subviscosus
                                                     [Penstemon spectabilis ssp. subviscosus]
                                             Penstemon spinulosus
                                             Penstemon stenophyllus
                                             Penstemon stephensii
                                             Penstemon strictiformis
                                                   [Penstemon strictus ssp. strictiformis]
                                             Penstemon strictus
                                                   [Penstemon strictus ssp. angustus]
                                                   [Penstemon strictus var. strictus]
                                             Penstemon subglaber
                                             Penstemon subserratus
                                             Penstemon subulatus
                                             Penstemon sudans
                                                   [Penstemon deustus ssp. sudans]
                                             Penstemon suffrutescens
                                             Penstemon superbus
                                             Penstemon tenuiflorus
                                             Penstemon tenuis
                                             Penstemon ternatus
                                             Penstemon teucrioides
                                             Penstemon thompsoniae
                                                   [Penstemon thompsoniae ssp. jaegeri]
                                                   [Penstemon thompsoniae ssp. thompsoniae]
                                                   [Penstemon thompsoniae var. desperatus]
                                             Penstemon thurberi
                                                   [Penstemon thurberi var. anestius]
                                             Penstemon tidestromii
                                                   [Penstemon leptanthus]
                                             Penstemon tiehmii
                                             Penstemon tolmiei
                                             Penstemon torreyi
                                             Penstemon tracyi
                                             Penstemon triflorus
                                               Penstemon triflorus var. integrifolius
                                                     [Penstemon triflorus ssp. integrifolius]
                                               Penstemon triflorus var. triflorus
                                                     [Penstemon helleri]
                                                     [Penstemon triflorus ssp. triflorus]
                                             Penstemon triphyllus
                                             Penstemon tubiflorus
                                                   [Penstemon tubiflorus var. achoreus]
                                                   [Penstemon tubiflorus var. tubiflorus]
                                             Penstemon tusharensis
                                                   [Penstemon caespitosus var. suffruticosus]
                                             Penstemon uintahensis
                                             Penstemon utahensis
                                             Penstemon variabilis
                                             Penstemon vaseyanus
                                             Penstemon venosus
                                             Penstemon venustus
                                             Penstemon versicolor
                                             Penstemon virens
                                             Penstemon virgatus
                                               Penstemon virgatus var. asa-grayi
                                                     [Penstemon virgatus ssp. asa-grayi]
                                               Penstemon virgatus var. virgatus
                                             Penstemon wardii
                                             Penstemon washingtonensis
                                             Penstemon watsonii
                                             Penstemon whippleanus
                                             Penstemon whitedii
                                             Penstemon wilcoxii
                                                   [Penstemon ovatus var. pinetorum]
                                             Penstemon wrightii
                                             Penstemon yampaensis
                                                   [Penstemon acaulis var. yampaensis]
                                     Picrorhiza
                                             Picrorhiza kurrooa
                                     Plantago
                                             Plantago argyrea
                                                   [Plantago argyraea]
                                                   [Plantago purshii var. argyraea]
                                                   [Plantago purshii var. argyrea]
                                             Plantago aristata
                                                   [Plantago aristata var. nuttallii]
                                                   [Plantago patagonica var. aristata]
                                             Plantago australis
                                               Plantago australis ssp. hirtella
                                                     [Plantago hirtella ssp. galeottiana]
                                                     [Plantago hirtella var. galeottiana]
                                                     [Plantago hirtella var. mollior]
                                                     [Plantago hirtella]
                                             Plantago bigelovii
                                               Plantago bigelovii ssp. bigelovii
                                               Plantago bigelovii ssp. californica
                                                     [Plantago californica]
                                             Plantago californica
                                             Plantago canescens
                                                   [Plantago canescens var. cylindrica]
                                                   [Plantago septata]
                                             Plantago cordata
                                             Plantago coronopus
                                                   [Plantago coronopus ssp. commutata]
                                             Plantago debilis
                                             Plantago elongata
                                               Plantago elongata ssp. elongata
                                               Plantago elongata ssp. pentasperma
                                             Plantago erecta
                                                   [Plantago erecta ssp. rigidior]
                                                   [Plantago erecta var. erecta]
                                                   [Plantago hookeriana var. californica]
                                                   [Plantago patagonica var. californica]
                                             Plantago eriopoda
                                                   [Plantago shastensis]
                                             Plantago firma
                                                   [Plantago truncata ssp. firma]
                                             Plantago hawaiensis
                                                   [Plantago hawaiensis var. laxa]
                                             Plantago helleri
                                             Plantago heterophylla
                                             Plantago hirtella
                                             Plantago hookeriana
                                                   [Plantago hookerana]
                                             Plantago juncoides
                                             Plantago lanceolata
                                                   [Plantago altissima]
                                                   [Plantago lanceolata var. sphaerostachya]
                                             Plantago macrocarpa
                                                   [Plantago macrocarpum]
                                             Plantago major
                                                   [Plantago asiatica]
                                                   [Plantago halophila]
                                                   [Plantago major ssp. intermedia]
                                                   [Plantago major var. asiatica]
                                                   [Plantago major var. intermedia]
                                                   [Plantago major var. major]
                                                   [Plantago major var. pachyphylla]
                                                   [Plantago major var. pilgeri]
                                                   [Plantago major var. scopulorum]
                                             Plantago maritima
                                                   [Plantago maritima ssp. serpentina]
                                               Plantago maritima var. californica
                                                     [Plantago juncoides var. californica]
                                               Plantago maritima var. juncoides
                                                     [Plantago juncoides var. decipiens]
                                                     [Plantago juncoides var. glauca]
                                                     [Plantago juncoides var. laurentiana]
                                                     [Plantago juncoides]
                                                     [Plantago maritima ssp. borealis]
                                                     [Plantago maritima ssp. juncoides]
                                                     [Plantago oliganthos var. fallax]
                                                     [Plantago oliganthos]
                                               Plantago maritima var. maritima
                                             Plantago media
                                                   [Plantago media var. monnieri]
                                             Plantago oliganthos
                                             Plantago ovata
                                                   [Plantago brunnea]
                                                   [Plantago fastigiata]
                                                   [Plantago gooddingii]
                                                   [Plantago insularis var. fastigiata]
                                                   [Plantago insularis var. scariosa]
                                                   [Plantago insularis]
                                                   [Plantago minima]
                                             Plantago pachyphylla
                                                   [Plantago glabrifolia]
                                                   [Plantago grayana var. abrotanelloides]
                                                   [Plantago grayana]
                                                   [Plantago hillebrandii]
                                                   [Plantago krajinae]
                                                   [Plantago krajinai]
                                                   [Plantago melanochorous]
                                                   [Plantago melanochrous]
                                                   [Plantago muscicola]
                                                   [Plantago pachyphylla var. maviensis]
                                                   [Plantago pachyphylla var. rotundifolia]
                                             Plantago patagonica
                                                   [Plantago patagonica var. breviscapa]
                                                   [Plantago patagonica var. gnaphalioides]
                                                   [Plantago patagonica var. oblonga]
                                                   [Plantago patagonica var. spinulosa]
                                                   [Plantago picta]
                                                   [Plantago purshii var. breviscapa]
                                                   [Plantago purshii var. oblonga]
                                                   [Plantago purshii var. picta]
                                                   [Plantago purshii var. spinulosa]
                                                   [Plantago purshii]
                                                   [Plantago spinulosa]
                                                   [Plantago wyomingensis]
                                             Plantago princeps
                                               Plantago princeps var. anomala
                                                     [Plantago princeps var. hirtella]
                                               Plantago princeps var. laxifolia
                                                     [Plantago princeps var. denticulata]
                                                     [Plantago princeps var. laxiflora]
                                               Plantago princeps var. longibracteata
                                                     [Plantago princeps var. acaulis]
                                                     [Plantago princeps var. elata]
                                               Plantago princeps var. princeps
                                                     [Plantago princeps var. queleniana]
                                             Plantago psyllium
                                                   [Plantago arenaria]
                                                   [Plantago indica]
                                                   [Plantago scabra]
                                             Plantago pusilla
                                                   [Plantago hybrida]
                                                   [Plantago pusilla var. major]
                                             Plantago rhodosperma
                                             Plantago rugelii
                                                   [Plantago regelii]
                                               Plantago rugelii var. asperula
                                               Plantago rugelii var. rugelii
                                             Plantago sparsiflora
                                             Plantago subnuda
                                             Plantago tweedyi
                                                   [Plantago eriopoda var. tweedyi]
                                             Plantago virginica
                                                   [Plantago virginica var. viridescens]
                                             Plantago wrightiana
                                                   [Plantago hookeriana var. nuda]
                                     Pocilla
                                     Pseudolysimachion
                                             Pseudolysimachion spurium
                                                   [Veronica spuria]
                                     Pseudorontium
                                             Pseudorontium cyathiferum
                                                   [Antirrhinum cyathiferum]
                                     Russelia
                                             Russelia alata
                                             Russelia equisetiformis
                                                   [Russelia juncea]
                                             Russelia racemosa
                                     Sairocarpus
                                             Sairocarpus breweri
                                                   [Antirrhinum breweri]
                                                   [Antirrhinum vexillocalyculatum ssp. breweri]
                                             Sairocarpus cornutus
                                                   [Antirrhinum cornutum var. leptaleum]
                                                   [Antirrhinum cornutum]
                                                   [Antirrhinum leptaleum]
                                             Sairocarpus coulterianus
                                                   [Antirrhinum coulterianum ssp. orcuttianum]
                                                   [Antirrhinum coulterianum]
                                             Sairocarpus elmeri
                                                   [Antirrhinum elmeri]
                                             Sairocarpus kingii
                                                   [Antirrhinum kingii]
                                             Sairocarpus multiflorus
                                                   [Antirrhinum multiflorum]
                                             Sairocarpus nuttallianus
                                                   [Antirrhinum nuttallianum ssp. nuttallianum]
                                                   [Antirrhinum nuttallianum]
                                             Sairocarpus pusillus
                                                   [Antirrhinum nuttallianum ssp. subsessile]
                                                   [Antirrhinum subsessile]
                                             Sairocarpus subcordatus
                                                   [Antirrhinum subcordatum]
                                             Sairocarpus vexillocalyculatus
                                                   [Antirrhinum vexillo-calyculatum ssp. vexillo-calyculatum]
                                                   [Antirrhinum vexillocalyculatum ssp. intermedium]
                                                   [Antirrhinum vexillocalyculatum]
                                             Sairocarpus virga
                                                   [Antirrhinum virga]
                                             Sairocarpus watsonii
                                                   [Antirrhinum kingii var. watsonii]
                                                   [Antirrhinum watsonii]
                                     Schistophragma
                                             Schistophragma intermedium
                                                   [Schistophragma intermedia]
                                     Scoparia
                                             Scoparia dulcis
                                             Scoparia flava
                                             Scoparia montevidensis
                                               Scoparia montevidensis var. glandulifera
                                     Sophronanthe
                                     Stemodia
                                           [Lendneria]
                                             Stemodia durantifolia
                                                   [Capraria durantifolia]
                                                   [Stemodia arizonica]
                                             Stemodia lanata
                                                   [Stemodia tomentosa]
                                             Stemodia maritima
                                             Stemodia schottii
                                             Stemodia verticillata
                                                   [Erinus verticillatus]
                                                   [Lendneria verticillata]
                                                   [Lindernia verticillata]
                                     Synthyris
                                           [Besseya]
                                             Synthyris alpina
                                                   [Besseya alpina]
                                             Synthyris borealis
                                             Synthyris bullii
                                                   [Besseya bullii]
                                                   [Wulfenia bullii]
                                             Synthyris canbyi
                                             Synthyris cordata
                                                   [Synthyris reniformis var. cordata]
                                             Synthyris dissecta
                                                   [Synthyris cymopteroides]
                                                   [Synthyris hendersonii]
                                                   [Synthyris pinnatifida var. canescens]
                                             Synthyris laciniata
                                                   [Synthyris laciniata ssp. ibapahensis]
                                                   [Synthyris laciniata ssp. laciniata]
                                                   [Synthyris pinnatifida var. laciniata]
                                             Synthyris lanuginosa
                                                   [Synthyris pinnatifida var. lanuginosa]
                                             Synthyris missurica
                                               Synthyris missurica ssp. major
                                                     [Synthyris missurica var. major]
                                                     [Synthyris reniformis var. major]
                                               Synthyris missurica ssp. missurica
                                                     [Synthyris missurica ssp. hirsuta]
                                               Synthyris missurica ssp. stellata
                                                     [Synthyris stellata]
                                             Synthyris oblongifolia
                                                   [Besseya oblongifolia]
                                             Synthyris pinnatifida
                                                   [Synthyris paysonii]
                                                   [Synthyris pinnatifida var. pinnatifida]
                                             Synthyris plantaginea
                                                   [Besseya arizonica]
                                                   [Besseya plantaginea]
                                             Synthyris platycarpa
                                             Synthyris ranunculina
                                             Synthyris reniformis
                                                   [Synthyris reniformis var. reniformis]
                                             Synthyris ritteriana
                                                   [Besseya ritteriana]
                                             Synthyris rubra
                                                   [Besseya rubra]
                                             Synthyris schizantha
                                             Synthyris stellata
                                             Synthyris wyomingensis
                                                   [Besseya cinerea]
                                                   [Besseya wyomingensis]
                                     Tonella
                                             Tonella floribunda
                                             Tonella tenella
                                     Tragiola
                                     Veronica
                                             Veronica X lackschewitzii
                                             Veronica agrestis
                                                   [Pocilla agrestis]
                                             Veronica alpina
                                                   [Veronica alpina ssp. australis]
                                                   [Veronica alpina var. alpina]
                                                   [Veronica alpina var. australis]
                                             Veronica americana
                                             Veronica anagallis-aquatica
                                                   [Veronica comosa]
                                                   [Veronica glandifera]
                                                   [Veronica micromera]
                                                   [Veronica micromeria]
                                                   [Veronica salina]
                                             Veronica arguteserrata
                                             Veronica arvensis
                                             Veronica austriaca
                                               Veronica austriaca ssp. vahlii
                                             Veronica barrelieri
                                             Veronica beccabunga
                                             Veronica biloba
                                                   [Pocilla biloba]
                                             Veronica campylopoda
                                             Veronica catenata
                                                   [Veronica catenata var. glandulosa]
                                                   [Veronica comosa var. glaberrima]
                                                   [Veronica comosa var. glandulosa]
                                                   [Veronica connata ssp. glaberrima]
                                                   [Veronica connata var. glaberrima]
                                                   [Veronica connata var. typica]
                                                   [Veronica connata]
                                             Veronica chamaedrys
                                             Veronica copelandii
                                             Veronica cusickii
                                             Veronica cymbalaria
                                                   [Veronica glandulifera]
                                             Veronica dillenii
                                             Veronica filiformis
                                             Veronica fruticans
                                             Veronica gentianoides
                                             Veronica grandiflora
                                             Veronica grandis
                                                   [Veronica bachofenii]
                                             Veronica hederifolia
                                             Veronica incana
                                                   [Veronica spicata ssp. incana]
                                             Veronica longifolia
                                                   [Pseudolysimachion longifolium]
                                             Veronica nutans
                                             Veronica officinalis
                                               Veronica officinalis var. officinalis
                                                     [Veronica officinalis var. tournefortii]
                                                     [Veronica tournefortii]
                                             Veronica opaca
                                             Veronica peregrina
                                                   [Veronica peregrina ssp. peregrina]
                                                   [Veronica peregrina ssp. xalapensis]
                                                   [Veronica peregrina var. typica]
                                                   [Veronica peregrina var. xalapensis]
                                                   [Veronica sherwoodii]
                                                   [Veronica xalapensis]
                                             Veronica persica
                                                   [Pocilla persica]
                                                   [Veronica persica var. aschersoniana]
                                                   [Veronica persica var. corrensiana]
                                                   [Veronica persica var. persica]
                                             Veronica plebeia
                                                   [Veronica plebia]
                                             Veronica polita
                                                   [Pocilla polita]
                                                   [Veronica didyma]
                                             Veronica prostrata
                                             Veronica scutellata
                                                   [Veronica scutellata var. villosa]
                                             Veronica serpyllifolia
                                                   [Veronica humifusa]
                                                   [Veronica serpyllifolia ssp. humifusa]
                                                   [Veronica serpyllifolia ssp. serpyllifolia]
                                                   [Veronica serpyllifolia var. borealis]
                                                   [Veronica serpyllifolia var. humifusa]
                                                   [Veronica serpyllifolia var. nummularioides]
                                                   [Veronica tenella]
                                                   [Veronicastrum serpyllifolium ssp. humifusum]
                                                   [Veronicastrum serpyllifolium]
                                             Veronica spicata
                                                   [Pseudolysimachion spicatum]
                                                   [Veronica spicata ssp. spicata]
                                             Veronica stelleri
                                                   [Veronica stelleri var. glabrescens]
                                                   [Veronica wormskjoldii var. stelleri]
                                             Veronica sublobata
                                             Veronica teucrium
                                                   [Veronica austriaca ssp. teucrium]
                                                   [Veronica crinita]
                                                   [Veronica latifolia]
                                             Veronica tournefortii
                                             Veronica triloba
                                             Veronica triphyllos
                                             Veronica undulata
                                             Veronica verna
                                             Veronica wormskjoldii
                                               Veronica wormskjoldii ssp. nutans
                                                     [Veronica alpina var. alterniflora]
                                                     [Veronica alpina var. cascadensis]
                                                     [Veronica alpina var. geminiflora]
                                                     [Veronica alpina var. nutans]
                                                     [Veronica alpina var. unalaschcensis]
                                                     [Veronica nutans]
                                                     [Veronica wormskjoldii ssp. alterniflora]
                                               Veronica wormskjoldii ssp. wormskjoldii
                                                     [Veronica alpina var. terrae-novae]
                                                     [Veronica wormskjoldii var. wormskjoldii]
                                     Veronicastrum
                                             Veronicastrum virginicum
                                                   [Leptandra virginica]
                                                   [Veronica virginica]
                                     Wulfenia
                                             Wulfenia intermedia
                                             Wulfenia notoniana