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FOC | Family List | FOC Vol. 23 | Carex

22. Carex zizaniifolia Raymond, Mém. Jard. Bot. Montréal. 53: 36. 1959.

菰叶薹草 gu ye tai cao

Rhizome short. Culms tufted, 60-70 × ca. 0.2 cm, obtusely trigonous, lower part only bearing sheaths, from middle up bearing leaves. Leaves loosely arranged, longer than culms; leaf blade narrowly elliptic or lanceolate, 15-25 × 2-2.5 cm, scabrid along veins, with prominent transverse veins, margins loosely hairy, base cuneate, apex acuminate; sheaths 1.4-2 cm, glabrous, sheath mouth loosely pubescent and then glabrescent. Involucral bracts similar to leaves, much longer than inflorescence branches. Panicle compound, 5-6 × 1-1.5 cm, 14-16-branched; inflorescence branches single, spicate or spikelike, 8-12 mm, arising from axil of involucral bract; peduncles of inflorescence branches tenuous, glabrous; inflorescence axes sharply trigonous, hairy on edges; bractlets glumelike, ca. 2 mm, awned. Cladoprophylls utriculiform, ca. 1 mm, apex ligulate, ligule as long as cladoprophyll, hairy along veins; spikes bisexual, androgynous, 5-6 mm; male part of spike slightly longer than female part; female part fewer flowered; female glumes ovate, ca. 2 mm, hairy, margins erose, midrib extending into scabrid awn. Utricles ovate-elliptic, ca. 3 mm, densely hairy, apex attenuate into beak, orifice minutely 2-toothed. Nutlets immature.

● SE Yunnan (Pingbian).


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