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FOC | Family List | FOC Vol. 22 | Poaceae

158. Sacciolepis Nash, Man. Fl. N. States. 89. 1901.

囊颖草属 nang ying cao shu

Authors: Shou-liang Chen & Sylvia M. Phillips

Annuals or perennials. Leaf blades linear to convolute; ligule membranous. Inflorescence a narrowly cylindrical, densely spikelike panicle. Spikelets asymmetrical, lanceolate-oblong to ovate, usually laterally or rarely dorsally compressed, plump, florets 2; glumes prominently ribbed, lower glume 1/4–3/4 spikelet length, broad, loose and slightly inflated, upper glume equaling spikelet, deeply concave and gibbous on the back; lower lemma resembling upper glume but less gibbous, staminate or neuter, its palea often much reduced; upper floret readily deciduous, the lemma dorsally compressed, often much shorter than spikelet, thinly coriaceous to cartilaginous, smooth, shiny, margins inrolled or flat but never hyaline. x = 9.

About 30 species: tropics, predominantly in Africa; three species in China.

This is a genus of aquatic and marshland grasses, recognized by the spikelike panicle of asymmetrical, ribbed spikelets.

1 Perennial with spongy, often floating stems; spikelets dorsally compressed, 3–5 mm.   1 S. interrupta
+ Annuals with firm stems, not floating; spikelets laterally compressed, 1.5–2.8 mm   (2)
2 (1) Spikelets 2–2.8 mm, lanceolate.   2 S. indica
+ Spikelets 1.5–2 mm, ovate.   3 S. myosuroides

Lower Taxa


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