Bog Birch - Betula pumila
MNPS Threat Rank
Shrubs usually 3–4 m high. Twigs short-pubescent, densely glandular. Leaf blades cuneate with crenate margins, 1–4 cm long, glandular, paler beneath. Female catkins 10–25 mm long. Fruit with wings nearly as wide as nutlet. If subspecies are recognized then ours are var. glandulifera Regel (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Very similar to Betula glandulosa and often difficult to separate from it.
Scattered in western third of MT; YT to NS south to CA, CO, IL, NJ (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
- Additional ReferencesLegend: View Online Publication
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- Johnson, T. W. 1982. An analysis of pack and saddle stock grazing areas in the Bob Marshall Wilderness. M.Sc.Thesis. Bozeman, MT: Montana State University. 105 p.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.