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Alopecurus
Family: Poaceae
Alopecurus image
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William J. Crins. Flora of North America
Plants annual or perennial; sometimes shortly rhizomatous, cespitose or occasionally the culms solitary. Culms 5-110 cm, erect or decumbent, occasionally cormlike at the base; nodes glabrous. Leaves inserted mostly on the lower 1/2 of the culms; sheaths open; auricles absent; ligules 0.6-6.5 mm, truncate to acute, membranous, dorsally puberulent or glabrous, entire to lacerate; blades 0.7-12 mm wide, flat or involute, glabrous or scabrous, those of the uppermost leaves sometimes short or absent. Inflorescences terminal panicles, spikelike, capitate to cylindrical; branches usually less than 5 mm, lower branches sometimes to 2 cm; disarticulation below the glumes. Spikelets 1.8-7 mm, pedicellate, strongly laterally compressed, with 1 floret; rachilla prolongations absent. Glumes equaling or exceeding the florets, membranous or coriaceous, free or connate basally to more than 1/2 their length, 3-veined, keeled, keels ciliate, at least basally, apices obtuse to acute or shortly awned; calluses blunt, glabrous; lemmas membranous, margins often connate basally to 1/2 their length, keeled, indistinctly 3-5-veined, apices truncate to acute, awned dorsally, awns arising from just above the base to about midpoint, geniculate or straight; paleas absent or greatly reduced; lodicules absent; anthers 3, 0.3-4.1 mm; ovaries glabrous; styles fused, with 2 branches. Caryopses glabrous; hila short. x = 7. Name from the Greek alopex, fox, and oura, tail, referring to the cylindrical panicles.

Link to key to species in North America north of Mexico. 

Vascular plants of NE US and adjacent Canada
Spikelets 1-fld, articulated below the glumes; pedicels conspicuously swollen at the joint; glumes equal, 3-veined, strongly compressed and keeled, ±connate at base, especially on the adaxial side; lemma thin and membranous, about as long as the glumes, 5-veined, the margins often ±connate, the midvein excurrent into an awn; palea in ours minute or none; low annuals and perennials with flat lvs, membranous ligule, and dense, cylindric or subcylindric, spike-like panicles. 25, N. Temp.

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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Alopecurus aequalis
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Alopecurus alpinus
Image of Alopecurus alpinus
Alopecurus antarcticus
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Alopecurus aristatus
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Alopecurus arundinaceus
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Alopecurus bonariensis
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Alopecurus borealis
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Alopecurus brachystachus
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Alopecurus bulbosus
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Alopecurus californicus
Image of Alopecurus californicus
Alopecurus carolinianus
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Alopecurus cornucopiae
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Alopecurus creticus
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Alopecurus dasyanthus
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Alopecurus davisii
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Alopecurus fulvus
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Alopecurus geniculatus
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Alopecurus gerardii
Image of Alopecurus gerardii
Alopecurus glacialis
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Alopecurus glaucus
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Alopecurus heleochloides
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not available
Alopecurus himalaicus
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Alopecurus hitchcockii
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Alopecurus howellii
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Alopecurus japonicus
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Alopecurus lanatus
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not available
Alopecurus lechleri
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Alopecurus magellanicus
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Alopecurus myosuroides
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Alopecurus occidentalis
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Alopecurus paludosus
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Alopecurus palustris
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Alopecurus ponticus
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Alopecurus pratensis
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Alopecurus rendlei
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Alopecurus saccatus
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Alopecurus textilis
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Alopecurus tuscheticus
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Alopecurus utriculatus
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Alopecurus vaginatus
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Alopecurus x haussknechtianus
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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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