Avena sterilis
Avena sterilis
Şifan
Annual. Stems 30-130 cm, erect, slightly geniculate at base, glabrous. Leaf sheaths hairy to glabrous; ligule 3-8 mm, obtuse; blades 5.5-30 cm x3-10 mm, linear, acuminate, glabrous, slightly ciliate on margins. Panicle 6-30 x 4-12 cm, pyramidal, equilateral to subsecund; branches patent to contracted. Spikelets 20-45 mm, with 2-3 florets. Rachilla disarticulating above glumes but not between florets. Glumes subequal, 7-11-veined, lanceolate, acuminate; lower 19-42 mm; upper 22-45 rnm, Lemma 20-35 mm, lanceolate, bifid, densely hairy in lower 2/3, dorsally awned; awn 5-7 cm, geniculate and twisted in lower half. Palea 16-25 mm, ciliate on keels.
1. Spikelets 30-45 mm; lowest lemma 25-35 mm subsp. sterilis
1. Spikelets 20-30 mm; lowest lemma 20-25 mm subsp.ludoviciana
