Difference between revisions of "Schoenus"
Sp. Pl. 1: 42. 1753.
Gen. Pl. ed. 5, 26. 1754.
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|family=Cyperaceae | |family=Cyperaceae | ||
|illustrator=Yevonn Wilson-Ramsey | |illustrator=Yevonn Wilson-Ramsey | ||
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|distribution=Worldwide in warm-temperate and tropical regions. | |distribution=Worldwide in warm-temperate and tropical regions. | ||
|reference=kukenthal1938a | |reference=kukenthal1938a | ||
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|special status= | |special status= | ||
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|genus=Schoenus | |genus=Schoenus | ||
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Latest revision as of 20:40, 5 November 2020
Herbs, perennial, cespitose, rhizomatous. Culms distally branched, terete. Leaves basal; ligules absent; blades involute or subcylindric. Inflorescences terminal, sometimes pseudolateral, capitate [diffusely branched]; spikelets (1–)10–25, black or very dark purple; involucral bracts 1–2, spreading or erect, leaflike. Spikelets: scales 3–8, distichous, black or very dark purple, 2–3 proximal scales empty, distal scales each subtending flower. Flowers bisexual; perianth bristles 0–6, shorter or longer than achene, smooth or scabrous; stamens 3; styles deciduous, linear, 3-fid. Achenes rounded-trigonous to subterete.
Distribution
Worldwide in warm-temperate and tropical regions.
Discussion
Species ca. 80 (1 in the flora).
Schoenus is restricted mostly to Australasia; a few species occur in Africa, Eurasia, and the New World.