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Difference between revisions of "Schoenoplectus sect. Actaeogeton"
Adansonia, n.s. 16: 130. 1976.
Basionym: Scirpus sect. Actaegeton Reichenbach Fl. Germ. Excurs., 78. 1830
Treatment appears in FNA Volume 23.
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Revision as of 21:37, 27 May 2020
Plants annual or rarely perennial, cespitose; rhizomes inconspicuous, very short, firm [perennials, rhizomes long]. Culms 0.5–3 mm diam. Leaves all basal. Inflorescences capitate or of 1 spikelet [sometimes branched]. Spikelets: scales each with 3–11 distinct parallel ribs in proximal part of spikelet, apex entire, mostly mucronate. Flowers: perianth present or absent, segments bristlelike, spinulose; amphicarpic flowers absent. Achenes plane or biconvex, sometimes trigonous, rugulose, without prominent, transverse, wavy ridges.
Distribution
Worldwide, mostly in eastern Asia, the Pacific Islands, and e North America.
Discussion
Species ca. 23 (3 in the flora).
Selected References
None.