Page authors: Don Knoke, David Giblin
Deschampsia elongata
slender hair grass

Distribution: Occurring on both sides of the Cascades in Washington; Alaska south to California, east to Alberta, Montana and New Mexico.

Habitat: Moist sandy or gravelly banks and slopes, and borders of streams and lakes.

Flowers: June-July

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Perennial with tufted basal leaves and several hollow culms 2.5-8 dm. tall.


Sheaths open, usually glabrous; ligules pointed, 3-9 mm. long, puberulent, usually split; blades usually glabrous, the basal filiform, only 2-4 cm. long, the cauline flat or folded, up to 1.5 mm. broad.


Inflorescence a narrow panicle 5-30 cm. long, pale greenish to purplish, the slender branches ascending; spikelets 2-flowered; glumes subequal, acuminate, 3-nerved, 3-5.5 mm. long, usually exceeding the upper flower; lemmas 2-3 mm. long, smooth and shining, blunt, awned from just below mid-length, the awn 3-4 mm. long, straight; paleas subequal to the lemmas; callus bearded with hairs half as long as the lemmas; rachilla prolonged beyond the uppermost flower.

Accepted Name:
Deschampsia elongata (Hook.) Munro
Publication: Pl. Hartw. 342. 1857.

Synonyms & Misapplications:
Aira elongata Hook.
Additional Resources:

PNW Herbaria: Specimen records of Deschampsia elongata in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Deschampsia elongata checklist entry.

E-Flora BC: Deschampsia elongata atlas page.

CalPhotos: Deschampsia elongata photos.

USDA Plants: Deschampsia elongata information.

26 photographs:
Group by