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FOC | Family List | FOC Vol. 23 | Cyperaceae | Cyperus

6. Cyperus radians Nees & Meyen ex Kunth, Enum. Pl. 2: 95. 1837.

辐射穗砖子苗 fu she sui zhuan zi miao

Cyperus radians var. floribundus (E. G. Camus) Kükenthal; C. sinensis Debeaux; C. sinensis var. floribundus E. G. Camus; Mariscus radians (Nees & Meyen ex Kunth) Tang & F. T. Wang; M. radians var. floribundus (E. G. Camus) S. M. Huang.

Perennials. Rhizomes very short. Culms tufted, 1.5-5[-8] cm tall, 3-angled, smooth. Leaves longer than culm; sheath purplish brown, very short; leaf blade 2-8 mm wide, stiff, usually folded. Involucral bracts 3-7, leaflike, equaling or shorter than inflorescence. Inflorescence a simple or compound anthela; rays 3-8, mostly 15-18 cm, sometimes with raylets; raylets usually less than 1 cm or mostly 2-3 cm. Capitulum of 8-30 spikelets congested at apex of rays or raylets, globose, 0.8-2.5 cm in diam. Spikelets ovoid, narrowly ovoid, or narrowly oblong-ovoid, 5-12 × 2-5 mm, 4-20-flowered; rachilla wingless. Glumes pale and purplish striate or purplish red on both surfaces, densely imbricate, broadly ovate, 3.5-4 mm, papery, 11-13-veined, keel abaxially green, apex recurved mucronate. Stamens 3; anthers broadly linear. Style long; stigmas 3. Nutlet blackish brown, broadly ellipsoid, ca. 1/2 as long as subtending glume, triquetrous, slightly concave on 3 sides, with dense punctate processes. Fl. and fr. Jul-Oct.

Sands at seashores, wastelands by seashores; near sea level to below 100 m. Fujian, Guangdong, Hainan, Shandong, Taiwan, Zhejiang [Indonesia, Malaysia, Myanmar, Sri Lanka, Thailand, Vietnam].


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