ID Features: |
Habit: Annual.
Culms: 30-100 cm. tall, erect or ascending from a decumbent often creeping base,
rooting at the nodes, freely branching.
Blades: 4-20 cm. long, 4-10 mm. wide, more or less papillose-scabrous on both sides,
occasionally purplish.
Sheaths: Shorter than the internodes, loose, the upper less than the lower, densely
papillose-hirsute.
Ligule: Membranous, 2-3 mm. long.
Inflorescence: Composed of 2-10 spikelike racemes 5-18 cm. long, which are disposed in
whorls, or approximate at the summit of the stems; rachis winged or flat-margined,
the margin as wide as the central rib.
Spikelets: Narrow, nearly planoconvex, acute, 2.5-4 mm. long, 1-flowered, usually
appressed-pubescent between the smooth or scabrous nerves, in 2's on one side of the
flat and winged rachis, one of the spikelets subsessile, the other longer-pediceled,
the pedicel strongly hispidulous, sharply 3- angled.
Glumes: First minute, triangular, glabrous; second glume about one half as long as the
pale or grayish fertile lemma, narrow, ciliate, 3-5-nerved.
Lemmas: Sterile lemma strongly nerved, the lateral internerves appressed pubescent
(at maturity the hairs sometimes spreading), fertile lemma cartilaginous,
papillose-striate, with a hyaline margin not inrolled.
Fruit: Cartilaginous with pale hyaline margins, lanceolate, acutely apiculate with age.
Habitat: Waste places, roadsides, and cultivated ground. June-September.
Use: Of some forage value when seeded in pure stands on cropland.
Remarks: One of the most common garden and lawn weeds in the state.
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