Perennial or annual, tufted to decumbent, rhizomatous
Leaf blade linear or setaceous, somewhat rigid, flat or rolled and pungent; ligule a fringe of hairs
Inflorescence a panicle, dense and contracted; spikelets solitary, pedicelled or subsessile
Spikelet 7.5-24.0 mm long, lanceolate, laterally compressed, disarticulating above glumes and ± between florets; glumes ± equal, as long as to longer than spikelet, similar, firm, with hyaline margin, prominently 5-11-nerved, separated by an internode, awnless; upper glume somewhat narrower than lower, usually acuminate
Florets 3-6, bisexual or sometimes upper floret male, sterile and reduced to a small scale; lemma similar in texture to glumes, membranous, prominently 7-11-nerved, densely and shortly hairy between nerves and with tufts of hairs at point of insertion of median awn, 2-lobed, lobes narrow, hyaline and tapering into short straight lateral awns, central awn arising from sinus, geniculate; callus obliquely pungent, hairy; palea membranous, obtuse or 2-lobed, 2-keeled, keels winged
Lodicules 2, glabrous, cuneate, fleshy
Stamens 3
Ovary glabrous; styles long, densely plumose
x = 6 (high polyploidy)
Nomenclature:
Centropodia Rchb.
Reichenbach: 212a (1828)
Chippindall: 246 (1955) under Danthonia Stapf
Conert: 239 (1962) under Asthenatherum Nevski
Hubbard: 122 (1970) under Asthenatherum Nevski
Cope: 657 (1982)
Clayton & Renvoize: 177 (1986)
Gibbs Russell et al.: 80 (1990)
Watson & Dallwitz: 214 (1994)
Asthenatherum Nevski
Nevski: 8 (1934)
Distribution & Notes:
Global: Species 4, North Africa through Middle East to India
Southern Africa: Species 2, Namibia, Botswana to Northern Cape
References:
CHIPPINDALL, L.K.A. 1955. A guide to the identification of grasses in South Africa. In D. Meredith, The grasses and pastures of South Africa. Central News Agency, Cape Town
CLAYTON, W.D. & RENVOIZE S.A. 1986. Genera graminum. Grasses of the world. Kew Bulletin. Additional series 13
CONERT, H.J. 1962. Über die Gramineen-Gattung Asthenatherum Nevski. Senckenbergiana Biologica 43
COPE, T.A. 1982. Centropodia: an earlier name for Asthenatherum (Gramineae). Kew Bulletin 37
GIBBS RUSSELL, G.E., WATSON, L., KOEKEMOER, M., SMOOK, L., BARKER, N.P., ANDERSON, H.M. & DALLWITZ. M.J. 1990. Grasses of southern Africa. Memoirs of the Botanical Survey of South Africa No. 58
HUBBARD, C.E. 1970. Flora of tropical East Africa. Gramineae (Part 1)
REICHENBACH, H.G.L. 1828. Conspectus regni vegetabilis. C. Cnobloch, Leipzig
WATSON, L. & DALLWITZ, M.J. 1994. The grass genera of the world, revised edn. CAB International, Oxon
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