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FOC | Family List | FOC Vol. 22 | Poaceae

146. Cynodon Richard in Persoon, Syn. Pl. 1: 85. 1805.

狗牙根属 gou ya gen shu

Authors: Bi-xing Sun & Sylvia M. Phillips

Capriola Adanson, nom. rej.; Dactilon Villars, nom. rej.

Perennials, rhizomatous or stoloniferous, sometimes sward forming. Culms slender to robust, leafy, internodes short. Leaf blades broadly linear to filiform, flat; ligule membranous or ciliate. Inflorescence digitate or sometimes 2 or more closely spaced whorls; racemes unilateral, slender; spikelets sessile, imbricate, biseriate; rachis flat or semiterete. Spikelets strongly laterally compressed, floret 1, with or without rachilla extension (very rarely 2nd floret present), narrowly ovate, awnless, disarticulating above glumes; glumes subequal, shorter or as long as floret, narrow, herbaceous, 1-veined or upper glume 3-veined, apex acuminate, both or only lower glume persistent; lemma keeled, boat-shaped, cartilaginous, 3-veined, usually pubescent on keel, apex entire, awnless. Caryopsis ellipsoid, laterally compressed. x = 9, 10.

Ten species: tropics of the Old World, especially Africa, one species pantropical extending into warm-temperate regions; two species in China.

1 Rhizomes absent; racemes 5–10 cm; leaf sheath mouth glabrous or pilose; anthers ca. 0.5 mm.   1 C. radiatus
+ Rhizomes present; racemes 2–6 cm; leaf sheath mouth bearded; anthers more than 1 mm.   2 C. dactylon

Lower Taxa


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