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Taiwan Gramineae | Family List | Poaceae

Avena L.


Avena sativa

Credit: cs kuoh

Annual. Panicle loose, nodding. spikelets large, more than 10 mm, 2-several-flowered, disarticulating below each floret or only above glumes; glumes herbaceous to membranous, usually equal and as long as spikelet, 3-11-nerved, rounded on back, smooth; lemmas coriaceous, rounded, bidentate to biaristulate the latter rarly with 2 additional setae, geniculately awned from the back (awn often reduced or absent in cultivated species); floret callus, when deciduous, acute to pungent. Ovary hairy; hilum linear.

Species ±25. Mainly Mediterranean and Middle East, extending to northern Europe, and widely introduced to other temperate regions.

Weedy places. A. fatua is one of the world’s worst weeds.


1 Spikelets more than 2 florets; lemmas densely-bearded, mor or less brownish; florets falling off when mature   Avena fatua
+ Spikelets 1-2-florets; lemmas nearly glabrous, greenish; florets persistent.   Avena sativa

Lower Taxa


Related Objects  

Flora of China  
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