Avena L.
Lemmas with red or brown or white hairs near the base
Terminal teeth of the lemmas extended as bristles 2–4 mm long. Spikelets mostly 2-flowered; pedicels usually with a single kink. Lemmas with stiff red hairs; awns slightly bent near the base. Annual up to 70 cm high. Widespread. Weed of cultivation; roadsides. Introd. from the Mediterranean. Fl. mainly spring Avena barbata
Terminal teeth of the lemmas acute, c. 1 mm long. Spikelets mostly 3-flowered. Hairs on the lemmas brown or white