Avena L.
Lemmas scabrous or almost glabrous. Spikelets mostly 2-flowered; florets not readily separating from the glumes; awns usually straight, sometimes absent. Annual up to 70 cm high. Widespread. Cultivated; roadsides. Introd. from Europe. Fl. mainly spring. Common Oat Avena sativa
Lemmas with red or brown or white hairs near the base