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FOC | Family List | FOC Vol. 22 | Poaceae

214. Heteropogon Persoon, Syn. Pl. 2: 533. 1807.

黄茅属 huang mao shu

Authors: Shou-liang Chen & Sylvia M. Phillips

Perennial or annual. Culms tufted. Leaf sheaths usually keeled; leaf blades linear; ligule membranous, sometimes with ciliate fringe. Inflorescence of solitary racemes, these terminal or axillary and loosely aggregated into a spathate panicle; peduncle included to long-exserted. Racemes linear, dense, spikelets imbricate, 1 to several pairs of homogamous spikelets at base of raceme below fertile pairs, fragile between fertile pairs; internodes and pedicels reduced to short oblique stumps obscured by hairs from backside of sessile spikelet callus. Homogamous spikelets herbaceous, flat, lanceolate-oblong. Sessile spikelet subterete; callus long, pungent, bearded; lower glume leathery, obtuse; upper glume awnless; lower floret reduced to a hyaline lemma; upper lemma stipitiform, entire, passing into a stout geniculate awn with hairy column. Pedicelled spikelet larger than sessile, resembling homogamous spikelets, awnless; callus slender, pedicel-like; true pedicel reduced to a stump.

Six species: throughout the tropics and subtropics; three species in China.

1 Annual; leaf sheaths with rows of glands along veins.   1 H. melanocarpus
+ Perennial; leaf sheaths without glands   (2)
2 (1) Culms up to 1 m tall; raceme 3–7 cm (excluding awns); 3–10(–12) pairs of homogamous spikelets.   2 H. contortus
+ Culms 1–3 m tall; raceme 8–15 cm (excluding awns); 12–15 pairs of homogamous spikelets.   3 H. triticeus

Lower Taxa


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