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

26. Deyeuxia tibetica Bor, Kew Bull. [4]. 1949: 66. 1949.

藏野青茅 zang ye qing mao

Perennial, loosely tufted, rhizomatous; rhizomes elongate, slender. Culms erect or decumbent, (5–)10–20 cm tall, ca. 1 mm in diam., densely pubescent below panicle, 1–2-noded. Leaf sheaths scabrid, tight on tillers, inflated on culm; leaf blades involute, rarely flat, 0.5–8 cm, 1.5–2.5 mm wide, scabrid, apex obtuse; ligule 2–4 mm, hirtellous, lacerate. Panicle very dense, spikelike, broadly oblong to ovate in outline, 1–2.5 × 1–1.5 cm, axis densely pubescent; branches abbreviated. Spikelets 4.5–6 mm, purple or brownish purple; glumes lanceolate, subequal, thin, margins subhyaline, dorsally densely villous to scabrid-hirtellous or subglabrous, lower glume 1-veined, upper glume 3-veined, apex acute to apiculate; callus hairs ca. 3/4 length of lemma; lemma ca. 4 mm, apex 4-denticulate; awn sub-basal, 5–8 mm, geniculate with twisted column; palea subequal to lemma; rachilla 2–3 mm, including hairs 4–5 mm. Anthers 2–2.5 mm. Fl and fr. Jul–Aug.

Alpine meadows, grassy slopes, wet sandy or gravelly places in montane regions; 3000–5500 m. Qinghai, Xizang [India].

This species occurs at higher altitudes than any other species of Deyeuxia in China.

1 Glumes densely villous.   26a var. tibetica
+ Glumes scabrid-hirtellous to subglabrous.   26b var. przevalskyi


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