Alopecurus spp.
Family: Poaceae
Alopecurus image
Max Licher  
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

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.
Images
not available
Map not
Available
Image of Alopecurus aristatus
Map not
Available
Images
not available
Map not
Available
Images
not available
Map not
Available
Image of Alopecurus bulbosus
Map not
Available
Image of Alopecurus cornucopiae
Map not
Available
Images
not available
Map not
Available
Images
not available
Map not
Available
Images
not available
Map not
Available
Images
not available
Map not
Available
Image of Alopecurus himalaicus
Map not
Available
Images
not available
Map not
Available
Images
not available
Map not
Available
Image of Alopecurus occidentalis
Map not
Available
Images
not available
Map not
Available
Image of Alopecurus tuscheticus
Map not
Available
Image of Alopecurus utriculatus
Map not
Available
Image of Alopecurus vaginatus
Map not
Available
Images
not available
Map not
Available