Washington Flora Checklist
A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium
 

Checklist » Betulaceae » Betula papyrifera

Betula papyrifera Marsh. [FNA3]
Betulaceae
paper birch, canoe birch, white birch

Origin: Native

Voucher:WTU (view specimen records)

Notes: FNA3: "Variants having more or less close, dark brown bark ( B . papyrifera var. commutata ) occur locally throughout the wide range of this species; this characteristic appears to be largely environmentally caused.

Betula × sandbergii Britton is a fairly common hybrid, occurring where the ranges of the parents ( B . papyrifera Marshall and B . pumila Linnaeus) come into contact. In most vegetative features it is intermediate between the parental conditions (K. E. Clausen 1963; C. O. Rosendahl 1928)."



Literature:
(none)
Photo © Ben Legler
(from WTU Image Collection)

Taxon treatment authored by Thayne Tuason; last updated 9/4/2009 by David Giblin
Synonyms
Betula alba L. var. commutata Regel
Betula andrewsii    [H&C+]
Betula montanensis    [H&C+]
Betula papyrifera Marsh. var. commutata (Regel) Fern.   [H&C]
Betula papyrifera Marsh. var. subcordata (Rydberg) Sargent   [H&C]
[FNA3: "Betula papyrifera Marshall var. subcordata (Rydberg) Sargent, formerly recognized in several state, provincial, and regional floras, consists of introgressants of B . occidentalis into B . papyrifera (J. R. Dugle 1966)."]




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