Alnus rubra is the largest species of alder in North America and one of the largest in the world, reaching heights of 20 to 30 metres (66 to 98 ft).

Alnus rubra Bong. (AHL-nus ROOB-ruh) Names: Red Alder is sometimes called Oregon Alder. Rubra means red– referring to the red dye made from its bark and the color of the wood when cut. Relationships: There are about eight alder species that reach tree size in the United States and Canada, about 20 or 30 species worldwide.

Fast-growing, Alnus rubra (Red Alder) is a medium-sized deciduous tree of graceful habit with a straight trunk and a pointed or rounded crown with rather pendulous branches. The thin bark is smooth, mottled, light gray to whitish, and often covered with green moss.

Red alder (Alnus rubra), also called Oregon alder, western alder, and Pacific coast alder, is the most common hardwood in the Pacific Northwest. It is a relatively short-lived, intolerant pioneer with rapid juvenile growth.

Broadleaf deciduous tree, generally 40-50 ft (12-15 m) tall, record trees over 100 ft (30 m), in the open a broadly conical shape with spreading branches, in the forest a straight trunk visible to a narrow, rounded crown. Bark smooth, light gray, but usually almost white with lichens.

Red alder is a deciduous tree in the Betulaceae (birch) family. It is native to the western coast of North America from Alaska down to California. This is one of the larger alders and grows 65-98 feet tall. It gets its name from the orange/red underbark that …

Alnus rubra is a species whose origins go back at least to the Eocene, now restricted to moist areas within 200 km of the Pacific Coast of western North America (Furlow 1979). It grows in riparian habitats along streams and by lakes, in swamps and marshy areas, and is regarded as a colonising species, especially following fire or other disturbance.

Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, disjunct to the east in northern Idaho. Habitat: Moist areas at low elevations. Flowers: March-April. Origin: Native. Growth Duration: Perennial. Conservation Status: Not …

Alnus rubra is a tree or shrub that is native to California, and also found elsewhere in North America and beyond.

Alnus rubra is the largest alder in North America north of Mexico; it often forms extensive stands along streams and on low-lying flood plains in the Pacific Northwest. The strongly revolute margins of its leaf blades make it easily distinguished from all of the other alders in the flora.