Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
Echinochloa Beauv. -- Barnyardgrass
Stout, weedy annuals (1)3-10 dm tall, with flat glabrous leaf blades
3-16 mm wide and terminal panicles of few to many densely flowered, racemose
branches; culms solitary or few to several, erect to decumbent, rather
succulent; sheaths glabrous or puberulent at the base; ligules
absent. Spikelets nearly sessile, ovoid, containing one terminal fertile
floret and one sterile floret, disarticulating below the glumes; glumes
very unequal, the first glume broad with a pointed tip, 1/3 to 1/2 the length
of the spikelet (excluding awns, if present), 3-nerved, the second glume broadly
ovate, acuminate to apiculate, hispid or papillose-hispid on the back, especially
on the nerves, 5-nerved, the outer 2 nerves marginal; sterile lemma resembling
the second glume in size and vestiture, awned or awnless; palea of the
sterile floret membranous, 1/2 to 3/4 the length of the sterile lemma body;
fertile lemma ovate to elliptic, plano-convex, firm, shiny, 2-3 mm long
including the short beak; palea of the fertile floret about as long as
the lemma body, its margins included by the inrolled margins of the lemma, the
tip free. Grain retained inside the fertile floret.
For information on related taxa sometimes encountered in wetland habitats,
see the discussion under Panicum capillare.
Gould, F. W., M. A. Ali and D. E. Fairbrothers. 1972. A
revision of Echinochloa in the United States. Amer. Midl.
||Firm, shiny apex of the fertile lemma obtuse or
broadly acute, sharply differentiated from the often shriveled beak,
the lemma body and the beak separated by a line of minute hairs.
||Firm, shiny apex of the fertile lemma narrowly
acute or acuminate, gradually tapering to the usually stiff beak,
the lemma body and beak not separated by a line of minute hairs (the
beak itself commonly puberulent).
63. Poaceae, the Grass Family
11. Echinochloa Beauv. -- Barnyardgrass
- 1. Echinochloa crusgalli (L.) Beauv.
- 2. Echinochloa muricata (Beauv.) Fern.
Return to Family -- Poaceae - The Grass Family
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