Blooms: June - August
Habit: herb
Duration: annual
Origin: Introduced
Distribution: Commonly cultivated throught the United States and Canada, occasionally escaping but usually not persisting.
Habitat: Roadsides and field margins.
Habit: herb
Duration: annual
Origin: Introduced
Distribution: Commonly cultivated throught the United States and Canada, occasionally escaping but usually not persisting.
Habitat: Roadsides and field margins.
Species Description:
General: Glabrous annuals, the culms to 2 m. tall in some varieties, hollow.
Leaves: Sheaths open; ligules 2-4 mm. long, puberulent, obtuse; blades 3-10 mm. broad, smooth or scabrous.
Flowers: Inflorescence a large, open panicle, the spikelets pendulous; spikelets usually 2-flowered, the rachilla firm, not readily disarticulating; glumes 20-25 mm. long, subequal, exceeding the florets; lemmas hardened, thickened, greenish, smooth to above midlength and prominently veined above, glabrous, entire at the tip, the callus usually naked; awn lacking on the second floret, attached about the middle of the first floret, nearly straight, up to 15 mm. long; lodicules linear, 1.8 mm. long.
Fruits: Utricle
General: Glabrous annuals, the culms to 2 m. tall in some varieties, hollow.
Leaves: Sheaths open; ligules 2-4 mm. long, puberulent, obtuse; blades 3-10 mm. broad, smooth or scabrous.
Flowers: Inflorescence a large, open panicle, the spikelets pendulous; spikelets usually 2-flowered, the rachilla firm, not readily disarticulating; glumes 20-25 mm. long, subequal, exceeding the florets; lemmas hardened, thickened, greenish, smooth to above midlength and prominently veined above, glabrous, entire at the tip, the callus usually naked; awn lacking on the second floret, attached about the middle of the first floret, nearly straight, up to 15 mm. long; lodicules linear, 1.8 mm. long.
Fruits: Utricle
Accepted Name:
Avena sativa L.Synonyms:
Avena byzantina K. Koch
Avena fatua L. var. sativa (L.) Hausskn.
Avena sativa L. var. orientalis (Schreb.) Alef.
Treated in Flora of the PNW as:
Avena sativa
Additional Resources:
PNW Herbaria Specimens: View list of Avena sativa specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of Avena sativa specimens in the WTU Herbarium database.
Washington Flora Checklist: Avena sativa treatment.
E-Flora BC: Avena sativa atlas page.
CalPhotos: Avena sativa images.
USDA Plants Database: Avena sativa.
Richard Old
Richard Old
Richard Old
Richard Old
Richard Old
Richard Old
Richard Old
Richard Old
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 WA Native Plant Society |
