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FOC | Family List | FOC Vol. 23 | Cyperaceae

7. Fuirena Rottbøll, Descr. Icon. Rar. Pl. 70. 1773.

芙兰草属 fu lan cao shu

Authors: Prof. Song-Yun Liang, Gordon C. Tucker & Jeremy J. Bruhl

Herbs, perennial or annual, sometimes with a creeping rhizome. Culms tufted or solitary, usually pubescent, nodose. Leaves mostly cauline, pubescent or glabrous; sheath usually completely surrounding culm; ligule tubular, hyaline; leaf blade usually elongate, linear to lanceolate. Involucral bracts leaflike, sheathing at base. Inflorescences paniculiform, with few to many glomerulate clusters or sessile spikelets at few to several nodes. Spikelets ovoid to ellipsoid, terete, many flowered, usually pubescent. Glumes spirally imbricately arranged, obovate, broadly elliptic, or oblong, each subtending a bisexual flower but basal 1 or 2 empty, apex obtuse and awned. Perianth bristles 3 or 6, 3 outer ones needlelike (sometimes reduced or absent), 3 inner ones squamellate and alternate with outer whorl. Stamens 3. Style not or hardly dilated at base, continuous with ovary, glabrous; stigmas 3. Nutlet ± stipitate, obovoid to ovoid, 3-sided, ± smooth or tuberculate.

About 30 species: warm regions of the world, most species in tropical Africa and tropical America; three species (one endemic) in China.

1 Perianth bristles 3, all alike, obovate, subsessile, gradually narrowed at base; culms 60-120 cm tall; anthers. 5-0.7 mm.   1 F. umbellata
+ Perianth bristles 6, of two types, outer ones needlelike and scaberulose or smooth, inner ones with a subquadrate or spatulate blade abruptly narrowed at base to a distinct ca. 0.3 mm stalk; culms 7-68 cm tall; anthers 0.2-0.3 mm   (2)
2 (1) Annuals; inflorescences glomerulate clusters each with 3-15 spikelets; spikelets 2.5-3 mm wide; inner whorl of perianth bristles with subquadrate blades.   2 F. ciliaris
+ Perennials and rhizomatous; inflorescences glomerulate clusters each with 3-5 spikelets; spikelets 3.5-5 mm wide; inner whorl of perianth bristles with spatulate blades.   3 F. rhizomatifera

Lower Taxa


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