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Trichophorum
Family: Cyperaceae
Trichophorum image
Nathanael Pilla  
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William J. Crins in Flora of North America (vol. 23)
Herbs, perennial, cespitose, rhizomatous or not. Culms trigonous or terete. Leaves basal or subbasal; sheaths bladeless or distal sheaths with blade to 5 mm, not fibrous; ligules present; blades obsolete or elongate, linear, less than 1 cm × 1 mm. Inflorescences terminal; spikelets 1; involucral bracts 1, suberect, scalelike, apex mucronate or awned. Spikelets: scales 3-9, spirally arranged, each subtending flower. Flowers bisexual; perianth of 0-6 bristles, straight, shorter than to about 20 times as long as achene, smooth or scabrous; stamens 3; styles linear, 3-fid, base persistent. Achenes trigonous or plano-convex. The appropriate name and typification for this genus have been debated widely. Arguments for conservation of Trichophorum Persoon in the sense used here, with the conserved type, T. alpinum (Linnaeus) Persoon, were presented (M. Salmenkallio and I. Kukkonen 1989), and the proposal was accepted in the Code. The proposal to segregate T. alpinum from the rest of Trichophorum, in the genus Eriophorella (J. Holub 1984), is based on characters that do not justify generic rank. In fact, K. Tan (1985) found that T. pumilum (Vahl) Schinz & Thellung could not be considered generically distinct from T. alpinum and created a combination for it within Eriophorella. The name Baeothryon Ehrhart ex A. Dietrich, previously considered to be a synonym of Trichophorum, has been shown to apply to a section of Eleocharis R. Brown (M. Salmenkallio and I. Kukkonen 1989; M. S. González-Elizondo and P. M. Peterson 1997).

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Show all taxa
Trichophorum alpinum
Image of Trichophorum alpinum
Trichophorum austriacum
Image of Trichophorum austriacum
Trichophorum cespitosum
Image of Trichophorum cespitosum
Trichophorum clementis
Image of Trichophorum clementis
Trichophorum clintonii
Image of Trichophorum clintonii
Trichophorum palustre
Images
not available
Trichophorum planifolium
Image of Trichophorum planifolium
Trichophorum pumilum
Image of Trichophorum pumilum
Trichophorum rigidum
Image of Trichophorum rigidum
Trichophorum subcapitatum
Images
not available
The National Science Foundation
Developments of SEINet, Symbiota, and associated specimen databases have been supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)