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FOC | Family List | FOC Vol. 23 | Cyperaceae

21. Blysmus Panzer ex Schultes, Mant. 2: 41. 1824.

扁穗草属 bian sui cao shu

Authors: Prof. Song-Yun Liang & Gordon C. Tucker

Blysmopsis Oteng-Yeboah; Nomochloa P. Beauvois ex T. Lestiboudois.

Herbs, perennial. Rhizomes creeping. Culms nodose or not, 3-angled or terete, smooth or scabrous. Leaves basal or cauline, ligulate. Basalmost involucral bract leaflike, suberect; bractlets glumelike. Inflorescences spicate with few to many pseudodistichous spikelets, rarely with a lateral branch. Spikelets dark brown, with few bisexual flowers. Glumes imbricate, subdistichous. Perianth bristles 3-6, rarely absent, usually retrorsely scabrous. Stamens 3; connective apex evident beyond anthers. Style deciduous, base not thickened; stigmas 2. Nutlet stipitate, oblong, plano-convex, smooth, apex beaked.

About four species: temperate regions in N Africa, Asia, Europe, and North America; three species in China.

1 Culms subterete; nutlet 3.5-4 mm; perianth bristles shorter than nutlet or usually absent.   1 B. rufus
+ Culms 3-angled; nutlet ca. 2 mm; perianth bristles 1-3 × as long as nutlet   (2)
2 (1) Perianth bristles erect or slightly flexuose, ± as long as nutlet; anthers ca. 2 mm.   2 B. compressus
+ Perianth bristles contorted, slender, 2-3 × as long as nutlet; anthers 2-2.5 mm.   3 B. sinocompressus

Lower Taxa


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