Leaf blade narrow-linear, rolled or usually expanded, sometimes aromatic; ligule an unfringed to a fringed membrane
Inflorescence terminal, or sometimes axillary in spatheate, leafy, false panicles, or digitate or subdigitate racemes with or without 1 or more homogamous pairs of spikelets; internodes and pedicels linear, solid, truncate to oblique at tip; spikelets in pairs, secund, in long-short combinations: one sessile, the other pedicelled, free of rachis
Sessile spikelet dorsiventrally compressed, falling with glumes; glumes ± equal; lower glume lanceolate or elliptic-oblong, obtuse to truncate, hairy, 2-keeled, acute to broadly obtuse; upper glume somewhat thinner in texture, 1-keeled, ciliate
Florets 2, lower floret sterile, reduced to a lanceolate hyaline lemma, entire, awnless; upper floret bisexual; lemma less firm than glumes, reduced to a linear, entire, hyaline stipe, awned; awn geniculate, twisted, longer than body of lemma; callus very short, rounded, hairy; palea minute or suppressed
Lodicules 2, fleshy, minute, glabrous
Stamens 1-3
Ovary ellipsoid, glabrous; style plumose above
Caryopsis oblong, dorsiventrally compressed
Pedicelled spikelet similar to sessile spikelet, male or sterile
x = 10 (polyploidy)
Nomenclature:
Dichanthium Willemet
Willemet: 11 (1796)
Chippindall: 480 (1955)
Clayton & Renvoize: 722 (1982)
Clayton & Renvoize: 342 (1986)
Gibbs Russell et al.: 105 (1990)
Watson & Dallwitz: 320 (1994)
Distribution & Notes:
Global: Species ± 20, Old World tropics
Southern Africa: Species 2, 1 of which is naturalised, widespread except in Northern Cape and not recorded in Western and Eastern 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. 1982. Flora of tropical East Africa. Gramineae (Part 3)
CLAYTON, W.D. & RENVOIZE S.A. 1986. Genera graminum. Grasses of the world. Kew Bulletin. Additional series 13
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
WATSON, L. & DALLWITZ, M.J. 1994. The grass genera of the world, revised edn. CAB International, Oxon
WILLEMET, R. 1796. Dichanthium. Neue Annalen der Botanick. (Usteri) 18
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