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

3. Microstegium nudum (Trinius) A. Camus, Ann. Soc. Linn. Lyon, N.S. 68: 201. 1921.

竹叶茅 zhu ye mao

Pollinia nuda Trinius, Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 2: 307. 1833; Eulalia nuda (Trinius) Kuntze; Leptatherum royleanum Nees; Microstegium arisanense (Hayata) A. Camus; Pollinia arisanensis Hayata.

Annual. Culms rambling, rooting at lower nodes, 20–80 cm long, nodes pubescent. Leaf sheaths glabrous, one margin ciliate; leaf blades narrowly lanceolate, thin, 3–8 × 0.5–1.1 cm, usually glabrous, midvein a white line below middle, apex acute; ligule ca. 0.5 mm. Racemes 2–7, very slender, slightly flexuous, lower becoming divaricate, 4–8 cm; rachis internodes filiform, glabrous, longer than spikelet. Sessile spikelet 3.5–5 mm; callus hairs 1–1.3 mm; lower glume narrowly lanceolate-oblong, back shallowly concave, glabrous or rarely hispidulous near apex, 2–4-veined, apex attenuate, hyaline, sometimes 2-toothed; upper glume weakly keeled or rounded on back, acuminate; lower lemma lanceolate, hyaline, slightly shorter than glumes; upper lemma linear, hyaline, 1.5–3 mm, emarginate; awn very fine, flexuous, 1–2 cm, apex hairlike, tangled; upper palea absent or minute. Anthers 2, 0.5–1 mm. Fl. and fr. Aug–Oct.

Moist mountainsides, forest undergrowth; ca. 3000 m. Anhui, Fujian, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [Bhutan, India, Japan, Nepal, Pakistan, Philippines, Vietnam; Africa, Australia].


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