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Montana Animal Field Guide

Montana Field Guides

Green Alder - Alnus viridis
Other Names:  Alnus crispa ssp. sinuata, Alnus sinuata

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Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:

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General Description
Shrubs to 3 m high with grayish bark, the stems often sprawling. Twigs with sharp-pointed winter buds. Leaf blades 3–10 cm long, lower surface slightly paler than above, the margins 1- to 2-times serrate. Inflorescence borne on twigs of the season. Female catkins 8–15 mm at maturity. Fruit with wings at least half as wide as nutlet (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

General Distribution
Mapped Observations

 


Distribution Comments
Western and central mountains in MT; in North America our subspecies sinuata occurs from AK and YK south through BC and AB to CA, ID and MT (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: 130

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Relative Density

Recency

 

(Records associated with a range of dates are excluded from time charts)



Habitat
Avalanche slopes, cool wet forest, often along streams; montane, subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Additional ReferencesLegend:   View WorldCat Record   View Online Publication
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    • Lesica, P. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX.
    • Little, E.L., Jr. 1979. Checklist of United States trees (native and naturalized). Agriculture Handbook No. 541. U.S. Forest Service, Washington, D.C. 375 pp.
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Citation for data on this website:
Green Alder — Alnus viridis.  Montana Field Guide.  Montana Natural Heritage Program.  Retrieved on July 25, 2014, from http://FieldGuide.mt.gov/detail_PDBET01080.aspx
 
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