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Montana Field Guide

Montana Field Guides

Paper Birch - Betula papyrifera


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 3

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General Description
Small, short-lived tree to 15 m tall with gray or brown bark when young but white and peeling when older. Twigs sparsely glandular and short-hairy. Leaf blades 4–7 cm long with sharp-dentate margins and tufts of light brown hair in axils of veins beneath. Female catkins 25–35 mm long. Fruit with wings as wide or wider than the nutlet (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Northwestern counties of MT plus Phillips, Powder River and Carter counties; AK to NL south to WA, CO, MN, PA and VA (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX; Furlow 1997 in Fl. N. Amer. Vol. 3).

Summary of Observations Submitted for Montana
Number of Observations: 119

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Moist open forest, rocky lower slopes, along streams and lakes; valleys, montane, rarely plains (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Paper Birch — Betula papyrifera.  Montana Field Guide.  .  Retrieved on , from