Alnus viridis (Chaix) DC.

Green alder, mountain alder, Sitka alder, Siberian alder

About plant names...

Alders are small to medium in size, often with multiple trunks and branches. Green alders rarely exceed 15' (4.6 m) in height, about haf the size of other alders, a woody shrub rather than a tree. These fast-growing shrubs are often found beside wet areas. They are also common on mountains, especially in avalanche-prone regions, where their ability to regrow from damaged stumps allows them to out-compete other trees.

Identification: Green alders have lenticels—white or light gray patches, that are roughly diamond-shaped. See Alnus for a comparison table.

Online References:

The Oregon Flora Image Project (Alnus viridis (Chaix) DC. ssp. sinuata (Regel) Á. Löve & D. Löve)

Earl J.S. Rook's Flora, Fauna, Earth, and Sky ... The Natural History of the Northwoods

Wikipedia

Wikimedia Commons

CalPhotos

The University of Wisconsin-Green Bay Cofrin Center for Biodiversity

The University of Wisconsin's Robert W. Freckmann Herbarium

EFloras

References:

Sibley, David Allen, The Sibley Guide to Trees, Alfred A. Knopf, 2009, pp. 159-165

Little, Elbert L., National Audubon Society Field Guide to North American Trees, Eastern Region, Alfred A. Knopf, 1980, p. 362

9/19/2009 · Acadia National Park, Bar Harbor, Maine
≈ 5 × 3½" (13 × 8.8 cm) ID is uncertain

Alnus viridis description by Thomas H. Kent, last updated 7 Oct 2021.

© FloraFinder.org. All rights reserved.

4/3/2010 · Owl’s Head Lighthouse, Owl’s Head, Maine
≈ 9 × 6" (23 × 15 cm)

4/3/2010 · Owl’s Head Lighthouse, Owl’s Head, Maine
≈ 6 × 9" (15 × 23 cm)

9/20/2009 · Acadia National Park, Bar Harbor, Maine
≈ 4½ × 3" (11 × 7.9 cm) ID is uncertain

3/21/2012 · Nashua River Rail Trail, Groton Center, Groton, Mass­a­chu­setts
≈ 4½ × 6" (11 × 14 cm)

Range:

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