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FOC | Family List | FOC Vol. 22 | Poaceae

129. Leptochloa P. Beauvois, Ess. Agrostogr. 71. 1812.

千金子属 qian jin zi shu

Authors: Shou-liang Chen & Sylvia M. Phillips

Diplachne P. Beauvois.

Annuals or perennials. Leaf blades linear; ligule membranous, sometimes with a ciliate fringe. Inflorescence open, composed of several to many slender racemes of usually imbricate spikelets scattered along a central axis. Spikelets laterally compressed or subterete, florets 1 to several, rachilla disarticulating above glumes and between florets; glumes usually shorter than lemmas, unequal, membranous, 1-veined; lemmas membranous, 3-veined, generally hairy along the veins, keeled or rounded, obtuse or 2-dentate, sometimes mucronate to short-awned; palea equal to or slightly shorter than lemma. Stamens (1–)3. Caryopsis laterally or dorsally compressed. x = 10.

Thirty-two species:throughout the tropics and in warm-temperate parts of America and Australia; three species in China.

1 Spikelets 6–10 mm, subterete, slightly imbricate or distant on indistinctly unilateral racemes; lemmas shortly awned; perennial   1 L. fusca
+ Spikelets 1.4–4 mm, laterally compressed, imbricate on clearly unilateral racemes; lemmas not awned; annual   (2)
2 (1) Leaf sheaths and blades glabrous; racemes flexuose; spikelets 2–4 mm, 3–6(–7)-flowered.   2 L. chinensis
+ Leaf sheaths and blades pilose; racemes straight; spikelets 1.4–2 mm; 2–4-flowered.   3 L. panicea

Lower Taxa


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