Avena sterilis L. Sterile Oat

Avena sterilis L. - Sterile Oat

Scientific Description:

Annual. Stems 30−130(−150) cm, erect, slightly geniculate at base, glabrous. Leaf sheaths hairy to glabrous; ligule 3−8 mm, obtuse; blades 5.5−30 cm × 3−10 mm, linear, acuminate, glabrous, slightly ciliate on margins. Panicle 6−30 × 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 mm. 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.

subsp. sterilis

Spikelets 30−45 mm; lowest lemma 25−35 mm.

Flowering time: March−August.

Habitat: Limestone slopes, cultivated land, pebble beaches, nr s.l−1800 m.

Reference:

Doğan M (1985). Avena sterilis L., In: Davis PH (ed.), Flora of Turkey and the East Aegean Islands, Edinburgh University Press, Edinburgh, 9: 306.

Public Description:

Avena sterilis subsp. sterilis, known as “sterile oat”, is native to Central Europe, the Mediterranean region, Southern Russia, the Crimea, the Caucasus, Southwestern and East Asia. It is an annual herb and grows up to 150 cm in length. It blooms between March and August and is found in limestone slopes, cultivated land and pebble beaches. It is one of the natural species of cultured oat varieties.

References:

Anonymous (2016). https://en.wikipedia.org/wiki/Avena_sterilis /,Accessed date: 07.03.2016.

Cabi E, Doğan M (2012). Avena L., In: Güner, A., Aslan, S., Ekim, T., Vural, M. & Babaç, M.T. (eds.), Türkiye Bitkileri Listesi (Damarlı Bitkiler). Nezahat Gökyiğit Botanik Bahçesi ve Flora Araştırmaları Derneği Yayını. İstanbul, pp. 699–700.