Page author: David Giblin
Acer glabrum
WTU specimens
Other herbaria

Distribution: Widely distributed throughout Washington; Alaska south to California, east to the Rockies and Nebraska.

Habitat: Moist woods from sea level to mid-elevations in the mountains.

Flowers: April-June

Origin: Native

Conservation Status: Not of concern

Description:
General:

Shrub or small tree 1-10 m. tall; stems glabrous, the bark grayish to reddish-purple.

Leaves:

Leaves opposite, glabrous to sparsely glandular-puberulent, 2-14 cm. long and nearly as broad, cordate, palmately 3-5 lobed, coarsely serrate, paler on the lower surface.

Flowers:

Plants monoecious to dioecious, staminate flowers with only rudiments of a pistil, but pistillate flowers with well-developed, though not always fertile, stamens; flowers about 8 mm. broad, in flat-topped clusters in the leaf axils; sepals usually 5; petals equal in size and number, or lacking; stamens usually 10, inserted on the outer edge of a lobed disk; styles and stigmas 2; ovary superior, 2-celled.

Fruits:

Samaras 2.5-3 cm. long, the wings not divergent.

Accepted Name:
Acer glabrum Torr.

Synonyms:
(none provided)
Infraspecies:
var. douglasii    From the coast of Washington and Oregon east to Idaho and Montana
Additional Resources:

PNW Herbaria: Specimen records of Acer glabrum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Acer glabrum checklist entry.

E-Flora BC: Acer glabrum atlas page.

CalPhotos: Acer glabrum photos.

USDA Plants: Acer glabrum information.

51 photographs:
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