Deciduous tree, 10-30 m tall; bark white, yellowish- to reddish-brown or dark grey, often peeling; twigs hairy with both short and long hairs.
Alternate, deciduous, broadly egg-shaped in outline, the tips sharp-pointed, hairy below, rarely glandular, 4-10 cm long, leaf stalks more than 1 cm long.
Male and female flowers in separate catkins 2-4 cm long; flowers emerging before or with the leaves; catkins breaking up at maturity.
Nutlets with broad wings, at least twice as wide as the body of the nutlets; bracts with rounded, ascending or diverging lateral lobes.
Numerous apparent hybrids between B. papyrifera and B. neoalaskana or B. occidentalis (e.g., B. x utahensis Britt. and B. subcordata Rydb.) have been formally named (see Brayshaw 1996b, Scoggan 1979). Two varieties occur in BC.
1. Mature bark white; fruiting bracts with ascending lateral lobes............... var. papyrifera
1. Mature bark white, yellowish- to reddish-brown or dark grey; fruiting bracts with lateral lobes diverging at right angles................... var. commutata (Regel) Fern.
Present over the Summer
Source: The USDA
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|BG(20), BWBS(407), CWH(163), ESSF(34), ICH(1854), IDF(672), MS(232), PP(36), SBPS(20), SBS(1013), SWB(12)|
Source: Klinkenberg 2013