Page author: Don Knoke
Avena sativa
oat
WTU specimens
Other herbaria

Distribution: Commonly cultivated throught the United States and Canada, occasionally escaping but usually not persisting.

Habitat: Roadsides and field margins.

Flowers: June - August

Origin: Introduced

Conservation Status: Not of concern

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

Accepted Name:
Avena sativa L.
Publication: Sp. Pl. 1: 79. 1753.

Synonyms & Misapplications:
Avena byzantina K. Koch
Avena fatua L. var. sativa (L.) Hausskn.
Avena sativa L. var. orientalis (Schreb.) Alef.
Additional Resources:

PNW Herbaria: Specimen records of Avena sativa in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Avena sativa checklist entry.

E-Flora BC: Avena sativa atlas page.

CalPhotos: Avena sativa photos.

USDA Plants: Avena sativa information.

8 photographs:
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