Page authors: Don Knoke, David Giblin
Deschampsia cespitosa
bering hair grass, Pacific hair grass, tufted hair grass, Beringian hairgrass, tufted hairgrass
WTU specimens
Other herbaria

Distribution: Widely distributed throughout Washington; widely distributed throughout North America.

Habitat: From coastal marshes and moist prairies to alpine ridges, talus slopes, mountain meadows, and moist areas in the mountains in general.

Flowers: June-September

Origin: Native

Conservation Status: Not of concern

Description:
General:

Strongly tufted perennial, the culms several, hollow, 2-12 dm. tall.

Leaves:

Sheaths open, glabrous to scabrous; ligules acute or obtuse, at least 4 mm. long, often split, pubescent; blades stiff, usually involute, 1.5-3 mm. broad, scabrous on the lower side, with a few raised veins.

Flowers:

Inflorescence a panicle 8-25 cm. long, from open and drooping to narrow and erect; spikelets glistening, purplish to tawny, usually 2-flowered, but often with 3 flowers; glumes narrow, the first 1-nerved, 2.5-5 mm. long, the second 3-nerved, 3-6 mm. long; lemmas 2.5-4 mm. long, 5-nerved, the tip 4-toothed; awn attached near the base of the lemma, 2.5-4 mm. long; paleas shorter than the lemmas; rachilla prolonged beyond the uppermost flower.

Accepted Name:
Deschampsia cespitosa (L.) P. Beauv.

Synonyms & Misapplications:
Aira caespitosa Muhl., orthographic variant
Aira holciformis (J. Presl) Steud.
Deschampsia beringensis Hultén
Deschampsia caespitosa (L.) P. Beauv. ssp. genuina (Reichenb.) Volk., orthographic variant
Deschampsia caespitosa (L.) P. Beauv. ssp. glauca (Hartm.) Hartm., orthographic variant
Deschampsia caespitosa (L.) P. Beauv. ssp. orientalis Hultén, orthographic variant
Deschampsia caespitosa (L.) P. Beauv. ssp. parviflora (Thuill.) K. Richt., orthographic variant
Deschampsia caespitosa (L.) P. Beauv. var. abbei Boivin, orthographic variant
Deschampsia caespitosa (L.) P. Beauv. var. alpicola (Rydb.) Á. & D. Löve & Kapoor, orthographic variant
Deschampsia caespitosa (L.) P. Beauv. var. glauca (Hartm.) Lindm. f., orthographic variant
Deschampsia caespitosa (L.) P. Beauv. var. intercotidalis Boivin, orthographic variant
Deschampsia caespitosa (L.) P. Beauv. var. littoralis (Gaudin) Richter, orthographic variant
Deschampsia caespitosa (L.) P. Beauv. var. longiflora Beal, orthographic variant
Deschampsia caespitosa (L.) P. Beauv. var. maritima Vasey, orthographic variant
Deschampsia caespitosa (L.) P. Beauv. var. parviflora (Thuill.) Coss. & Germ., orthographic variant
Deschampsia cespitosa (L.) P. Beauv. ssp. beringensis (Hultén) W.E. Lawr.
Deschampsia cespitosa (L.) P. Beauv. ssp. cespitosa
Deschampsia cespitosa (L.) P. Beauv. ssp. holciformis (J. Presl) W.E. Lawr.
Deschampsia cespitosa (L.) P. Beauv. var. arctica Vasey [HC]
Deschampsia cespitosa (L.) P. Beauv. var. cespitosa [HC]
Deschampsia cespitosa (L.) P. Beauv. var. longiflora Beal [HC]
Deschampsia glauca Hartm.
Deschampsia holciformis J. Presl
Additional Resources:

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

WA Flora Checklist: Deschampsia cespitosa checklist entry.

E-Flora BC: Deschampsia cespitosa atlas page.

CalPhotos: Deschampsia cespitosa photos.

USDA Plants: Deschampsia cespitosa information.

24 photographs:
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