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FOC | Family List | FOC Vol. 22 | Poaceae | Bouteloua

1. Bouteloua curtipendula (Michaux) Torrey, Explor. Red River Louisiana. 300. 1853.

垂穗草 chui sui cao

Chloris curtipendula Michaux, Fl. Bor.-Amer. 1: 59. 1803; Atheropogon curtipendulus (Michaux) E. Fournier; Cynodon curtipendulus (Michaux) Raspail; Dinebra curtipendula (Michaux) P. Beauvois; Eutriana curtipendula (Michaux) Trinius.

Perennial with short, slender, scaly rhizomes. Culms tufted, erect, 30–100 cm tall. Leaf sheaths glabrous or nearly so; leaf blades flat or slightly involute, 20–30 cm, 1–5 mm wide, both surfaces and margins scabrous, base pubescent; ligule ca. 1 mm. Inflorescence axis 15–25 cm; racemes 10–50, 1–2 cm, purplish, secund along axis, usually nodding, with 3–6 (–10) appressed or ascending spikelets, falling entire. Spikelets 4.5–10 mm; lower glume linear-lanceolate, 2.5–4 mm; upper glume lanceolate, 4(–7) mm; lemma of fertile floret usually somewhat exceeding glumes, acuminate, lateral veins extended into ca. 1 mm mucros; palea slightly longer than lemma; 2nd floret rudimentary, with long central awn and 2 shorter laterals, or greatly reduced, or lacking. Fl. and fr. summer to autumn. 2n = 28, 35, 40, 42, 56, 70.

Cultivated in China [native to America].

This is an American pasture grass (Side-oats Grama) reported to be excellent in China for grazing and also for hay.


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