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FOC | Family List | FOC Vol. 22 | Poaceae

170. Axonopus P. Beauvois, Ess. Agrostogr. 12. 1812.

地毯草属 di tan cao shu

Authors: Shou-liang Chen & Sylvia M. Phillips

Perennials, rarely annuals. Culms tufted or stoloniferous. Leaf blades flat or involute, often obtuse; ligule short, membranous-ciliolate. Inflorescence composed of 2 to many slender racemes, mostly subdigitate but sometimes along a short central axis; spikelets borne singly, subsessile, alternating in 2 rows along the narrow triquetrous rachis, lower lemma adaxial. Spikelets lanceolate to oblong, flatly biconvex, florets 2 (but apparently 1); lower glume absent; upper glume membranous, as long as spikelet, obscurely 4- or 5-veined; lower floret neuter, reduced to an empty lemma similar to upper glume, its palea absent; upper floret crustaceous, lemma margins inrolled, apex obtuse. x = 9, 10.

About 110 species: tropical and subtropical America, one species in Africa; two species (both introduced) in China.

Many species of Axonopus are good forage or lawn grasses. The two species found in China have been widely introduced in the humid tropics of the world.

1 Nodes of culm bearded; spikelets 2–2.7 mm; upper floret shorter than spikelet; leaf blades 6–12 mm wide.   1 A. compressus
+ Nodes of culm glabrous; spikelets 1.6–2 mm; upper floret equaling spikelet; leaf blades 3–6 mm wide.   2 A. fissifolius

Lower Taxa


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