Page author: Don Knoke
Dichanthelium acuminatum
hairy perennial panicgrass

Distribution: Southern British Columbia south along the coast to California; east of the Cascades mainly along water courses or around springs in the mountains, east to Montana and Wyoming.

Habitat: Rocky or sandy river banks or lake margins to open woods, marshy areas or dry prairies, from sea level to high elevation in the mountains.

Flowers: June-August

Origin: Native

Conservation Status: Not of concern


Perennial 1-3 dm. tall, the hollow culms simple in the spring, often branched and prostrate-spreading in the fall, with soft hairs throughout.


Sheaths open, ligules 3-4 mm. long, mainly of straight hairs; upper blades of the vernal culms larger than the basal, 5-12 mm. broad, those of the branches reduced; nodes with a ring of spreading hairs subtended by a glabrous band.


Inflorescence an open panicle 3-9 cm long and nearly as wide; spikelets articulate below the glumes, 2-flowered, 1.5-2 mm. long, elliptic-oblong to obovate; first glume about 0.5 mm. long, acute or obtuse, 1-nerved; second glume and sterile lemma obtuse, 7-9 nerved, about as long as the fruit at maturity, the two enclosing the fertile flower; second lemma hardened and very faintly nerved, the margins overlapping the equally firm palea.



Accepted Name:
Dichanthelium acuminatum (Sw.) Gould & C.A. Clark

Synonyms & Misapplications:
(none provided)
ssp. fasciculatum – hairy panicgrass
Additional Resources:

PNW Herbaria: Specimen records of Dichanthelium acuminatum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Dichanthelium acuminatum checklist entry.

E-Flora BC: Dichanthelium acuminatum atlas page.

CalPhotos: Dichanthelium acuminatum photos.

USDA Plants: Dichanthelium acuminatum information.

11 photographs:
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