Digitaria ischaemum (Schreb.)
Smooth Crabgrass

Habit: 		Annual.
Culms: 		15-50 cm. tall, erect or soon prostrate and rooting at the lower nodes, resembling D. sanguinalis.
Blades: 	1.5-13 cm. long, 2.5-6 mm., 4-10 cm. long, divergent in whorls, or approximate at the summit of the
		stems, the rachis with thin wings wider than the midrib.
Sheaths: 	Glabrous.
Ligule: 	Membranous.
Inflorescence: 	Spikelike racemes 2-6, 4-10 cm. long, divergent in whorls, or approximate at the summit of the
		stems, the rachis with thin wings wider than the midrib.
Spikelets: 	About 2 mm. long, 1-flowered, lanceolate-elliptic, in 2's, sessile or short-pediceled.
Glumes: 	First glume rudimentary or so thin as to be apparently wanting, the second glume and sterile lemma
		equal, densely short-villous between the nerves.
Lemmas: 	Sterile lemma 5-nerved; fertile lemma dark brown, pubescent with capitellate hairs, with a
		hyaline margin not inrolled.
Palea: 		Enclosed in the lemma.
Fruit: 		Grain.
Habitat: 	Waste places, fields and roadsides.  July-September.
Kansas Range:	East third.
Remarks: 	Often a troublesome weed.