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  Plantae
    Viridiplantae
     Streptophyta
     Embryophyta
      Tracheophyta
        Spermatophytina
            Magnoliopsida
                  Ranunculanae
                    Ranunculales
                           [Berberidales]
                           [Circaeasterales]
                           [Eupteleales]
                           [Fumariales]
                           [Glaucidiales]
                           [Helleborales]
                           [Hydrastidales]
                           [Lardizabalales]
                           [Menispermales]
                           [Nandinales]
                           [Papaverales]
                           [Podophyllales]
                            Papaveraceae
                                   [Chelidoniaceae]
                                   [Corydalaceae]
                                   [Eschscholziaceae]
                                   [Fumariaceae]
                                   [Hypecoaceae]
                                   [Platystemonaceae]
                                   [Pteridophyllaceae]
                                     Adlumia
                                             Adlumia fungosa
                                     Arctomecon
                                             Arctomecon californica
                                             Arctomecon humilis
                                             Arctomecon merriamii
                                     Argemone
                                             Argemone aenea
                                             Argemone alba
                                             Argemone albiflora
                                               Argemone albiflora ssp. albiflora
                                               Argemone albiflora ssp. texana
                                                     [Argemone albiflora var. texana]
                                             Argemone arizonica
                                             Argemone aurantiaca
                                             Argemone chisosensis
                                             Argemone corymbosa
                                               Argemone corymbosa ssp. arenicola
                                                     [Argemone corymbosa var. arenicola]
                                               Argemone corymbosa ssp. corymbosa
                                             Argemone glauca
                                               Argemone glauca var. decipiens
                                               Argemone glauca var. glauca
                                                     [Argemone glauca var. inermis]
                                             Argemone gracilenta
                                             Argemone hispida
                                                   [Argemone bipinnatifida]
                                                   [Argemone platyceras var. hispida]
                                             Argemone mexicana
                                                   [Argemone leiocarpa]
                                             Argemone munita
                                               Argemone munita ssp. argentea
                                                     [Argemone munita var. argentea]
                                               Argemone munita ssp. munita
                                               Argemone munita ssp. robusta
                                                     [Argemone munita var. robusta]
                                               Argemone munita ssp. rotundata
                                                     [Argemone munita var. rotundata]
                                             Argemone ochroleuca
                                                   [Argemone mexicana var. ochroleuca]
                                                   [Argemone ochroleuca var. stenophylla]
                                             Argemone pleiacantha
                                               Argemone pleiacantha ssp. ambigua
                                                     [Argemone pleiacantha var. ambigua]
                                               Argemone pleiacantha ssp. pinnatisecta
                                                     [Argemone pleiacantha var. pinnatisecta]
                                               Argemone pleiacantha ssp. pleiacantha
                                             Argemone polyanthemos
                                                   [Argemone intermedia var. polyanthemos]
                                                   [Argemone intermedia]
                                                   [Argemone platyceras]
                                             Argemone rotundata
                                             Argemone sanguinea
                                                   [Argemone platyceras var. rosea]
                                             Argemone squarrosa
                                               Argemone squarrosa ssp. glabrata
                                                     [Argemone squarrosa var. glabrata]
                                               Argemone squarrosa ssp. squarrosa
                                     Bicuculla
                                     Bocconia
                                             Bocconia frutescens
                                     Canbya
                                             Canbya aurea
                                             Canbya candida
                                     Capnoides
                                             Capnoides brachycarpum
                                             Capnoides campestre
                                             Capnoides halei
                                             Capnoides hastatum
                                             Capnoides micranthum
                                             Capnoides montanum
                                     Chelidonium
                                           [Chlidonium]
                                             Chelidonium majus
                                                   [Chelidonium majus var. laciniatum]
                                                   [Chelidonium majus var. majus]
                                                   [Chelidonium majus var. plenum]
                                                   [Chlidonium majus]
                                     Corydalis
                                             Corydalis aquae-gelidae
                                                   [Corydalis caseana ssp. aquae-gelidae]
                                             Corydalis aurea
                                                   [Capnoides aureum]
                                                   [Corydalis washingtoniana]
                                               Corydalis aurea ssp. aurea
                                               Corydalis aurea ssp. occidentalis
                                                     [Corydalis aurea var. occidentalis]
                                                     [Corydalis curvisiliqua ssp. occidentalis]
                                             Corydalis bidwelliae
                                             Corydalis brandegeei
                                             Corydalis campestris
                                             Corydalis capnoides
                                             Corydalis caseana
                                               Corydalis caseana ssp. brachycarpa
                                               Corydalis caseana ssp. brandegeei
                                               Corydalis caseana ssp. caseana
                                               Corydalis caseana ssp. cusickii
                                                     [Corydalis caseana var. cusickii]
                                               Corydalis caseana ssp. hastata
                                                     [Corydalis caseana var. hastata]
                                             Corydalis crystallina
                                                   [Capnoides crystallinum]
                                             Corydalis curvisiliqua
                                               Corydalis curvisiliqua ssp. curvisiliqua
                                               Corydalis curvisiliqua ssp. grandibracteata
                                                     [Corydalis curvisiliqua var. grandibracteata]
                                             Corydalis cusickii
                                             Corydalis flavula
                                                   [Capnoides flavulum]
                                                   [Fumaria flavula]
                                             Corydalis halei
                                             Corydalis lutea
                                                   [Pseudofumaria lutea]
                                             Corydalis micrantha
                                               Corydalis micrantha ssp. australis
                                                     [Corydalis aurea var. australis]
                                                     [Corydalis micrantha var. australis]
                                               Corydalis micrantha ssp. micrantha
                                                     [Corydalis aurea var. micrantha]
                                               Corydalis micrantha ssp. texensis
                                                     [Corydalis micrantha var. texensis]
                                             Corydalis montana
                                             Corydalis pauciflora
                                                   [Corydalis pauciflora var. albiflora]
                                                   [Corydalis pauciflora var. chamissonis]
                                             Corydalis scouleri
                                             Corydalis sempervirens
                                                   [Capnoides sempervirens]
                                             Corydalis solida
                                                   [Corydalis bulbosa]
                                     Dendromecon
                                             Dendromecon harfordii
                                                   [Dendromecon rigida ssp. harfordii]
                                             Dendromecon rigida
                                                   [Dendromecon rigida ssp. rhamnoides]
                                                   [Dendromecon rigida ssp. rigida]
                                                   [Dendromecon rigida var. rhamnoides]
                                     Dicentra
                                           [Ehrendorferia]
                                           [Lamprocapnos]
                                             Dicentra canadensis
                                                   [Bicuculla canadensis]
                                             Dicentra chrysantha
                                                   [Ehrendorferia chrysantha]
                                             Dicentra cucullaria
                                                   [Bicuculla cucullaria]
                                                   [Dicentra cucullaria var. occidentalis]
                                                   [Dicentra occidentalis]
                                             Dicentra eximia
                                                   [Bicuculla eximia]
                                             Dicentra formosa
                                               Dicentra formosa ssp. formosa
                                                     [Dicentra formosa var. brevifolia]
                                                     [Dicentra formosa var. brevipes]
                                               Dicentra formosa ssp. oregana
                                                     [Dicentra formosa ssp. oregona]
                                                     [Dicentra formosa var. oregana]
                                             Dicentra nevadensis
                                                   [Dicentra formosa ssp. nevadensis]
                                             Dicentra ochroleuca
                                                   [Ehrendorferia ochroleuca]
                                             Dicentra oregana
                                             Dicentra oregona
                                             Dicentra pauciflora
                                             Dicentra spectabilis
                                                   [Lamprocapnos spectabilis]
                                             Dicentra uniflora
                                     Fumaria
                                             Fumaria bastardii
                                             Fumaria capreolata
                                             Fumaria occidentalis
                                             Fumaria officinalis
                                                   [Fumaria officinalis ssp. officinalis]
                                                   [Fumaria officinalis ssp. wirtgenii]
                                                   [Fumaria officinalis var. wirtgenii]
                                             Fumaria parviflora
                                             Fumaria reuteri
                                                   [Fumaria martinii]
                                             Fumaria vaillantii
                                     Glaucium
                                           [Glacium]
                                             Glaucium corniculatum
                                                   [Chelidonium corniculatum]
                                             Glaucium flavum
                                                   [Glacium flavum]
                                     Hesperomecon
                                             Hesperomecon linearis
                                                   [Meconella linearis var. pulchella]
                                                   [Meconella linearis]
                                                   [Platystigma linearis]
                                     Hunnemannia
                                             Hunnemannia fumariifolia
                                     Hypecoum
                                             Hypecoum imberbe
                                                   [Hypecoum grandiflorum]
                                             Hypecoum pendulum
                                     Macleaya
                                             Macleaya cordata
                                                   [Bocconia cordata]
                                                   [Bocconia japonica]
                                     Meconella
                                           [Platystigma]
                                             Meconella californica
                                                   [Meconella collina]
                                                   [Meconella octandra]
                                             Meconella denticulata
                                                   [Meconella oregana var. denticulata]
                                             Meconella oregana
                                     Meconopsis
                                             Meconopsis regia
                                     Papaver
                                           [Stylomecon]
                                             Papaver X strigosum
                                             Papaver alaskanum
                                             Papaver alboroseum
                                                   [Papaver alboroseum var. elongatum]
                                             Papaver alpinum
                                                   [Papaver nudicaule var. pseudocorylatifolium]
                                             Papaver apulum
                                             Papaver argemone
                                             Papaver bracteatum
                                             Papaver californicum
                                                   [Papaver lemmonii]
                                             Papaver commutatum
                                             Papaver cornwallisense
                                             Papaver cornwallisensis
                                             Papaver dubium
                                             Papaver freedmanianum
                                             Papaver glaucum
                                             Papaver gorodkovii
                                             Papaver heterophyllum
                                                   [Stylomecon heterophylla]
                                             Papaver hybridum
                                                   [Papaver apulum var. micranthum]
                                             Papaver keelei
                                             Papaver kluanense
                                             Papaver lapponicum
                                                   [Papaver hultenii var. salmonicolor]
                                                   [Papaver hultenii]
                                                   [Papaver lapponicum var. lapponicum]
                                                   [Papaver radicatum ssp. lapponicum]
                                             Papaver lateritium
                                             Papaver macounii
                                               Papaver macounii ssp. discolor
                                                     [Papaver macounii var. discolor]
                                               Papaver macounii ssp. macounii
                                                     [Papaver alaskanum var. macranthum]
                                             Papaver mcconnellii
                                                   [Papaver denalii]
                                             Papaver microcarpum
                                             Papaver miyabeanum
                                             Papaver nigroflavum
                                             Papaver nudicaule
                                                   [Papaver croceum]
                                               Papaver nudicaule ssp. americanum
                                               Papaver nudicaule ssp. nudicaule
                                             Papaver orientale
                                                   [Papaver pseudo-orientale]
                                                   [Papaver pseudoorientale]
                                             Papaver polare
                                             Papaver pygmaeum
                                                   [Papaver radicatum var. pygmaeum]
                                             Papaver radicatum
                                               Papaver radicatum ssp. alaskanum
                                               Papaver radicatum ssp. kluanense
                                                     [Papaver nudicaule var. coloradense]
                                                     [Papaver nudicaule var. columbianum]
                                               Papaver radicatum ssp. polare
                                                     [Papaver nudicaule var. albiflora]
                                                     [Papaver radicatum var. albiflorum]
                                               Papaver radicatum ssp. radicatum
                                                     [Papaver lapponicum ssp. occidentale]
                                                     [Papaver lapponicum ssp. porsildii]
                                                     [Papaver nudicaule var. radicatum]
                                                     [Papaver radicatum ssp. occidentale]
                                                     [Papaver radicatum ssp. porsildii]
                                             Papaver rhoeas
                                             Papaver scammanianum
                                             Papaver somniferum
                                                   [Papaver somniferum var. setigerum]
                                             Papaver walpolei
                                                   [Papaver walpolei var. sulphureomaculatum]
                                     Platystemon
                                             Platystemon californicus
                                                   [Platystemon arizonicus]
                                                   [Platystemon californicus var. californicus]
                                                   [Platystemon californicus var. ciliatus]
                                                   [Platystemon californicus var. crinitus]
                                                   [Platystemon californicus var. horridulus]
                                                   [Platystemon californicus var. nutans]
                                                   [Platystemon californicus var. ornithopus]
                                                   [Platystemon confinis]
                                                   [Platystemon mohavensis]
                                     Pseudofumaria
                                     Romneya
                                             Romneya coulteri
                                             Romneya trichocalyx
                                                   [Romneya coulteri var. trichocalyx]
                                     Stylophorum
                                             Stylophorum diphyllum