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Alnus viridis (Chaix) DC.

Green alder, mountain alder, Sitka alder, Siberian alder

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassRosidaeRoses, legumes, proteas, dogwoods, hydrangeas, mistletoes, euphorbias, grapes, many more
OrderFagalesBirch, she-oak, beech, walnut, bayberry, others
FamilyBetulaceaeBirch family: birches, alders, hazels, hornbeams and hop-hornbeams
GenusAlnusThe classical Latin name for this genus
Speciesviridis“Green”

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

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

Alnus viridis (green alder, mountain alder, Sitka alder, Siberian alder)

9/19/2009 · Acadia National Park, Bar Harbor, Maine · ≈ 7 × 4½″ (17 × 11 cm) ID is uncertain

 

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

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Alnus viridis (green alder, mountain alder, Sitka alder, Siberian alder)

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

Alnus viridis (green alder, mountain alder, Sitka alder, Siberian alder)

4/3/2010 · Owl’s Head Lighthouse, Owl’s Head, Maine · ≈ 15 × 10″ (39 × 26 cm)

Alnus viridis (green alder, mountain alder, Sitka alder, Siberian alder)

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

Alnus viridis (green alder, mountain alder, Sitka alder, Siberian alder)

3/21/2012 · Nashua River Rail Trail, Groton Center, Groton, Mass­a­chu­setts · ≈ 4½ × 7″ (11 × 17 cm)

Range:

About this map...