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Eriophorum
Family: Cyperaceae
Eriophorum image
Max Licher
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Peter W. Ball & Daniel E. Wujek in Flora of North America (vol. 23)
Herbs, perennial, cespitose or not, rhizomatous. Culms solitary or not, trigonous or terete. Leaves basal and cauline; cauline leaves sometimes bladeless sheaths; ligules present; blades filiform to flat with filiform tip, to 25 cm × 2.5-4 mm. Inflorescences terminal, spikelets solitary, erect or (1-)2-10(-30) in subcapitate or subumbellate panicle; involucral bracts 1-several, scalelike or blade-bearing and leaflike throughout. Spikelets: scales (10-)20-200, spirally arranged, each subtending flower, or proximal empty. Flowers bisexual; perianth persistent, of (8-)10-25 hairlike, smooth bristles, or very rarely 6 antrorsely barbed bristles, greatly elongate, essentially straight, usually obscuring most of scales in spikelet, much longer than achene; stamens 1-3; styles deciduous, linear, 3-fid. Achenes trigonous. In some species the North American populations are considered to be conspecific with Eurasian populations; differences in achene micromorphology and isozyme data suggest that these relationships should be investigated more thoroughly.

Vascular plants of NE US and adjacent Canada
Scales spirally arranged, scarious, not awned; fls perfect, each in the axil of a scale; perianth of numerous (more than 10) persistent bristles, these much elongate at maturity, so that the mature spikelet forms a dense, cottony tuft commonly 2-4 cm; stamens 1-3; style trifid, deciduous; achene unequally trigonous, often with a short, slender stylar apiculus; perennial herbs of wet places, with grass-like lvs, the upper sheaths often bladeless; spikelets many-fld, solitary and terminal or few-many in an umbelliform cyme or head-like cluster; foliaceous bracts present in spp. with more than 1 spikelet. 20, N. Hemisphere.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
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Eriophorum alpinum
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Eriophorum angustifolium
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Eriophorum brachyantherum
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Eriophorum callitrix
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Eriophorum chamissonis
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Eriophorum comosum
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Eriophorum crinigerum
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Eriophorum cyperinum
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Eriophorum fellowsii
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Eriophorum gracile
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Eriophorum latifolium
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Eriophorum medium
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Eriophorum opacum
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Eriophorum polystachyon
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Eriophorum pylaieanum
Image of Eriophorum pylaieanum
Eriophorum rousseauianum
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Eriophorum russeolum
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Eriophorum scheuchzeri
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Eriophorum spissum
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Eriophorum tenellum
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Eriophorum triste
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Eriophorum vaginatum
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Eriophorum virginicum
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Eriophorum viridicarinatum
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Eriophorum x beringianum
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Eriophorum x churchillianum
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Eriophorum x gauthieri
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Eriophorum x medium
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Eriophorum x porsildii
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Eriophorum x pylaieanum
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Eriophorum x rousseauanum
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Eriophorum x sorensenii
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Eriophorum × fellowsii
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Eriophorum × pylaieanum
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The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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