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FOC | Family List | FOC Vol. 22 | Poaceae

164. Alloteropsis Presl, Reliq. Haenk. 1: 343. 1830.

毛颖草属 mao ying cao shu

Authors: Shou-liang Chen & Sylvia M. Phillips

Annuals or perennials. Culms erect or decumbent. Leaf blades convolute, linear or lanceolate. Inflorescence composed of slender racemes, these digitate or in whorls on a short common axis, each raceme with a weakly unilateral, narrowly triquetrous rachis, spikelets in pairs or clusters. Spikelets ovate to elliptic, dorsally compressed, florets 2; glumes unequal, acute to briefly awned; lower glume 1/2 spikelet length, membranous, 3-veined; upper glume as long as spikelet, herbaceous, 5–7-veined, ciliate along margins; lower floret staminate, lemma herbaceous, glabrous; lower palea much shorter than the anthers, bifid; upper lemma cartilaginous, margins inrolled, shortly awned; upper palea acute, the flaps basally auriculate. Caryopsis ellipsoid. x = 9.

Five species: tropical and S Africa, India, SE Asia, Australia; two species in China.

Alloteropsis is best distinguished from other panicoid genera by its awned spikelets and ciliate upper glume.

1 Tussocky perennial; leaf blades linear, base narrow, margins smooth; raceme rachis pilose.   1 A. semialata
+ Annual; leaf blades lanceolate, base cordate, margins pectinate; raceme rachis glabrous.   2 A. cimicina

Lower Taxa


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