Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
Alopecurus L. -- Foxtail
Tufted annuals and tufted or rhizomatous perennials with soft, flat leaves and
dense, cylindric, spikelike panicles; culms erect or decumbent at the
base. Spikelets 1-flowered, strongly compressed, densely crowded in the
spikelike panicle, disarticulating below the glumes; glumes equal, laterally
compressed, usually united toward the base, 3-nerved, often silky hairy on the
back, awnless; lemma about as long as the glumes or shorter, laterally
compressed with the margins united toward the base, faintly 3- to 5-nerved,
awned from the back, the awn not exserted to exserted well beyond the glume
tips; palea absent. Grain olivaceous to grayish-brown, somewhat
obovoid, apiculate at both ends, 1-2 mm long.
||Anthers more than 1.5 mm long; glumes more than
2.5 mm long; lemmas often more than 2.5 mm long.
||Anthers less than 1.5 mm long; glumes usually
less than 2.5 mm long; lemmas often less than 2.5 mm long.
||Awns elongate, geniculate, 5-10 mm long, the exserted
portion (1)2-6 mm long; plants nonrhizomatous, although some stems
tending to root at the lower nodes.
||Awns shorter, 0.3-2(6) mm long, seldom exserted
as much as 2 mm; plants strongly rhizomatous.
||Awn exserted just barely to 1.5 mm beyond the
||Awn exserted 2-4 mm beyond the glume tips.
||Plants annual; anthers ca. 0.5 mm long.
||Plants perennial; anthers 0.8-1.5 mm long.
63. Poaceae, the Grass Family
3. Alopecurus L. -- Foxtail
- 1. Alopecurus aequalis Sobol. -- Short-awn
- 2. Alopecurus arundinaceus Poir. --
- 3. Alopecurus carolinianus Walt. --
- 4. Alopecurus geniculatus L. -- Water
- 5. Alopecurus pratensis L. -- Meadow
Return to Family -- Poaceae - The Grass Family
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