IUCN threat status:

Not evaluated

Distribution

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Distribution

Distributions of gray alder and its subspecies. Maps courtesy of USDA, NRCS. 2011. The PLANTS Database. National Plant Data Team, Greensboro, NC. (14 June 2011).

gray alder

Gray alder occurs in North America and Europe [120,192,296]. It occurs in the northeastern and central regions of Europe, extending locally into the southern mountains [296].

States and provinces (as of 2011 [335]):
United States: AK, AZ, CA, CO, CT, IA, ID, IL, IN, MA, MD, ME, MI, MN, MT, ND, NH, NJ, NM, NV, NY, OH, OR, PA, RI, UT, VA, VT, WA, WI, WV, WY

Canada: AB, BC, LB, MB, NB, NF, NS, NT, ON, PE, QC, SK, YT

speckled alder Speckled alder, the eastern subspecies, occurs at least as far west as Saskatchewan [120,192]. Little [230] places its distribution as far west and north as northwestern Yukon, central Northwest Territories, and central Nunavut. Its distribution is mostly continuous, with scattered populations in Michigan, Ohio, and West Virginia [230].

States and provinces (as of 2011 [335]):
United States: CT, IA, IL, IN, MA, MD, ME, MI, MN, ND, NH, NJ, NY, OH, PA, RI, VA, VT, WI, WV

Canada: AB, BC, NT, SK, YT

thinleaf alder Thinleaf alder, the western subspecies, has a mostly continuous distribution. Populations are scattered and sometimes isolated in the southern Sierra Nevada [179,192,229,229]. It has been reported in Baja California, although it may no longer occur there [358].

States and provinces (as of 2011 [335]):
United States: AK, AZ, CA, CO, ID, MT, NM, NV, OR, UT, WA, WY

Canada: LB, MB, NB, NF, NS, ON, PE, QC, SK

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