克拉莎属 ke la suo shu

Authors: Prof. Song-Yun Liang, Jeremy J. Bruhl & Karen L. Wilson

Herbs, perennial. Rhizomes short, creeping. Culms terete. Leaves cauline; leaf blade V-shaped in cross section, margin scabrous. Involucral bracts leaflike, sheathing. Inflorescence an elongated compound anthela. Spikelets ovoid. Glumes ± spirally arranged, basal 4-6 empty, apical 2 fertile, apicalmost flower bearing a nutlet. Perianth bristles absent. Stamens 2. Stigmas 3; style base not distinct, thickened, persistent. Nutlet ovoid, subterete.

About four species: tropical and warm temperate regions of Asia, Australia, Europe, North and South America, and Pacific islands; one species in China.

Lower Taxon

• Cladium jamaicence subsp. chinense (Nees) T. Koyama, Stearn & L. H. J. Williams