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Montana Field Guide

Montana Field Guides

Dwarf Birch - Betula glandulosa
Other Names:  Betula nana s.l.

Native Species

Global Rank: G5
State Rank: S3S4

Agency Status
MNPS Threat Rank:
C-value: 8

External Links

General Description
Shrub to 2 m high with brown to black bark. Twigs short-pubescent, densely glandular. Leaf blades 1–2 cm long, glandular, paler beneath. Female catkins 5–20 mm long. Fruit with wings 1/4–1/2 as wide as nutlet (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Diagnostic Characteristics
Very similar to Betula pumila and often difficult to separate from it. Hybrids between the two are not uncommon. Some authors place this entity within a broad concept of B. nana (e.g., Flora North America).

Species Range
Montana Range


Range Comments
Northern Canada, Alaska, Siberia, northern Europe, Greenland. Rare in Que, Lab, NS (syn. B. michauxii).

Observations in Montana Natural Heritage Program Database
Number of Observations: 342

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



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

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Citation for data on this website:
Dwarf Birch — Betula glandulosa.  Montana Field Guide.  .  Retrieved on , from