Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Moist and irrigated areas, along streams and around ponds.
Flowers: June-September
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Wind
Annual, branching from the base, the culms erect to decumbent, 2-7 dm. tall, copiously covered with soft hairs 2-4 mm. long.
Sheaths open; articulation below the glumes; ligules composed of straight hairs 1.5-2 mm. long; blades 5-12 mm. broad.
Inflorescence a diffusely-branched panicle 1-3 dm. long. often partially included in the uppermost sheath; spikelets 2-flowered, 2.5-3 mm. long; first glume 3-nerved, half as long and the spikelet; second glume 7-nerved, about as long as the lower lemma, which is sterile and 9-nerved, both well exceeding and enclosing the fertile lemma and palea.
Publication: Sp. Pl. [Linnaeus] 1: 58. 1753.
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ssp. capillare – common panicgrass, witchgrass
Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
PNW Herbaria: Specimen records of Panicum capillare in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Panicum capillare checklist entry
OregonFlora: Panicum capillare information
E-Flora BC: Panicum capillare atlas page
CalPhotos: Panicum capillare photos
