Avena sterilis L. subsp. sterilis

Taxonomy: Fam. Poaceae// Genus: Avena// Species: Avena sterilis L.// Subspecies: Avena sterilis L. subsp. sterilis.

Determined according to the botanical key provided in Flora Europaea Vol. 5 (Tutin et al., 1980).

Distribution: Native from the Mediterranean to East Europe, Pakistan and Kenya, Northwest Africa according to the distribution information provided by the Plants of the World Online portal (Royal Botanic Gardens, Kew).

Habitat:  Grasslands and pastures.

Lifeform: Annual; therophyte according to the Raunkiær system.

Flowering period: Spring: APR, MAY.

Avena sterilis subsp. sterilis – habit. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – habit. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – inflorescence. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – inflorescence. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – spikelet. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – spikelets. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – spikelets. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – spikelet. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – spikelet. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – stem and leafwith ligule. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – stem, leaf sheath with ligule and lower part of leaf blade. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – lower part of plant- stems with leaves. Hilly region near village of Beli, 30.04.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – mature spikelets. Hilly region near village of Beli, 14.05.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – glumes of disarticulated spikelet. Hilly region near village of Beli, 14.05.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – florets of disarticulated spikelets. The rachilla disarticulates above the glumes, but not between the florets. Hilly region near village of Beli, 14.05.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – detached florets. The rachilla disarticulates above the glumes, but not between the florets. Hilly region near village of Beli, 14.05.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – detached florets. The rachilla disarticulates above the glumes, but not between the florets. Hilly region near village of Beli, 14.05.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – detached florets. The rachilla disarticulates above the glumes, but not between the florets. Hilly region near village of Beli, 14.05.2022. Photo by Trajche Dimitrovski.
Avena sterilis subsp. sterilis – detached florets. The rachilla disarticulates above the glumes, but not between the florets. Hilly region near village of Beli, 14.05.2022. Photo by Trajche Dimitrovski.

References:

Avena sterilis subsp. sterilis. Plants of the World Online, Royal Botanic Gardens Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77168713-1 [Accessed 14.05.2022].

Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. & Webb, D.A. (1980). Flora Europaea. Volume 5: Alismataceae to Orchidaceae (Monocotyledones). Cambridge: Cambridge University Press.

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