Setaria viridis (L.).
Green Bristlegrass

Habit: 		Erect glabrous tufted annual.
Culms: 		20-90 cm. tall, simple or branched at the base, erect or spreading, mostly glabrous.
Blades: 	Flat, 5-25 cm. long, 4-10 mm. wide, linear-lanceolate, not twisted, long-acuminate,
		slightly scabrous on both sides.
Sheaths: 	Shorter than the internodes, flattened, smooth except sometimes towards the summit,
		ciliate on the margins.
Ligule: 	Very short, densely ciliate.
Inflorescence: 	Panicle erect or somewhat nodding, densely flowered, green or purple, cylindric
		but tapering a little at the summit, usually less than 7 cm. long, excluding the
		bristles about 8 mm. thick, the axis densely villous with hairs about 1 mm. long,
		the branches very short bearing mostly 5-6 spikelets, 1-3 upwardly barbed bristles
		mostly 3-4 times the length of the spikelet, rachis pubescent.
Spikelets: 	2-2.5 mm. long, elliptic, spikelets failing entire.
Glumes: 	First about one third to one fourth the length of the spikelet, acute,
		3-nerved, the second and sterile lemma about as long as the fruit, or the glume
		shorter, 5-nerved, the sterile palea not fully developed.
Fertile lemmas:	Elliptic, finely and faintly wrinkled below or only striate, usually
		shorter than the spikelet, glabrous, finally indurated, obtuse, enclosing a shorter palea.
Fruit: 		Very finely transversely wrinkled or ridged.
Habitat: 	Weed in waste places and cultivated ground.  July-September.
Kansas Range:	Throughout.
Remarks: 	Very common weeds, of some forage value.
Synonyms:	Setaria viridis (L.) Beauv. var. viridis
		Setaria viridis (L.) Beauv. var. breviseta (Doell) A.S. Hitchc.
		Setaria viridis (L.) Beauv. var. weinmannii (Roemer & J.A. Schultes) Borbás