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

21. Festuca leptopogon Stapf in J. D. Hooker, Fl. Brit. India. 7: 354. 1896 [“1897”].

弱序羊茅 ruo xu yang mao

Festuca subulata Trinius var. leptopogon (Stapf) St.-Yves; F. takasagoensis Ohwi.

Plant loosely tufted, shortly rhizomatous; shoots extravaginal. Culms (30–)60–120 cm tall, nodes 3–5. Leaf sheaths glabrous, old basal sheaths reddish brown, becoming fibrous; auricles absent; leaf blades flat, soft, 8–15(–30) cm × 3–8 mm, glabrous, margins smooth or scabrid, veins 12–22; adaxial to abaxial sclerenchyma strands present; ligule (0.5–)1–2 mm, truncate. Panicle loose, nodding, (10–)15–30 cm; branches flexuously ascending, 6–15 cm, 1(–2) at lower nodes. Spikelets 7–8 mm; florets 2–3; glumes smooth; lower glume lanceolate, 1.5–3.2 mm; upper glume broadly lanceolate, 2.5–4(–5.5) mm; rachilla internodes 1–1.5 mm, scabrid; lemmas 6.5–7.5(–8) mm, smooth, apex distinctly notched; awns 6–10(–15) mm; palea keels smooth or occasionally scaberulous. Anthers 1–1.2(–1.6) mm. Ovary apex moderately or densely hairy. Fl. and fr. May–Jul.

Forests on mountain slopes, grasslands, streamsides; 2300–3900 m. Guizhou, Qinghai, Sichuan, Taiwan, Xizang, Yunnan [Bhutan, NE India, Malaysia, Nepal].


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