E-Flora BC: Electronic Atlas of the Flora of British Columbia

Achnatherum occidentale subsp. californicum (Thurb.) Barkworth
Poaceae (Grass family)

Introduction to Vascular Plants

© Frank Lomer  Email the photographer   (Photo ID #27561)

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Distribution of Achnatherum occidentale subsp. californicum
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Species Information

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Perennial tufted grass from fibrous roots; stems 30-120 cm tall, the nodes and internodes smooth to densely hairy.
Lower sheaths smooth to hairy, often fringed at the throats, brown to grey when old; blades to 3 mm wide, usually straight and upright; lower ligules 0.2-1.5 mm long, often fringed along the margins; upper ligules 0.3-1 (1.5) mm long.
Inflorescence a narrow panicle 8-30 cm long; glumes almost equal, 9-15 mm long, green, smooth; lemmas 6-7.5 mm long, hairy, the hairs 0.2-0.5 mm long, hairs at the tips similar in length to those at the base of the awns, the awns 15-40 mm long, twice bent, the first 2 segments with short hairs to long, soft, straight hairs, some of the hairs 0.5-1 mm long; paleas 2/5-3/5 as long as the lemmas, the calluses 0.8-1.2 mm long, sharp.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry rocky slopes and open forests in the steppe and montane zones; infrequent in SC and SE BC; S to WY, AZ, and CA.

Source: The Illustrated Flora of British Columbia

Taxonomic and Nomenclatural Links

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