paper birch, more...paper birch, western paper birch
[Betula alba var. commutata Regel, moreBetula papyrifera var. commutata (Regel) Fernald, Betula papyrifera var. elobata (Fernald) Sarg., Betula papyrifera var. macrostachya Fernald, Betula papyrifera var. papyrifera Marshall, Betula papyrifera var. pensilis Fernald]
