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25. Poaceae Tribe ISACHNEAE

柳叶箬族 liu ye ruo zu

Authors: Shou-liang Chen & Sylvia M. Phillips

Annuals or perennials. Leaf blades narrowly lanceolate to ovate; ligule a line of hairs, rarely absent. Inflorescence an open or contracted panicle. Spikelets all alike, florets 1 or 2, when 2 lower florets bisexual or male, upper floret bisexual or female, dorsally compressed, awnless, disarticulating above glumes and sometimes tardily between florets; glumes shorter than or equaling spikelet, membranous, deciduous or persistent; lemmas rounded on back, membranous to leathery, obscurely 0–7-veined, glabrous or pubescent, margins inrolled and clasping edges of palea. Caryopsis ellipsoid to plano-convex; hilum round to oval. Leaf anatomy: non-Kranz; microhairs slender or stout. x = 10.

Five genera and ca. 100 species: throughout the tropics, but mainly in Asia; three genera and 20 species (four endemic) in China.

1 Upper lemma indurate.   180 Isachne
+ Upper lemma membranous   (2)
2 (1) Spikelets with 2 florets; glumes persistent.   181 Coelachne
+ Spikelets with 1 floret; glumes deciduous.   182 Sphaerocaryum

Lower Taxa


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