5b. var. verticillata

Leaf sheaths with the ligule 0.7–1.5 mm long. Leaf blades roughened on both surfaces, without additional longer hairs. Bristles subtending the spikelets roughened with short, downwardly pointing hairs. 2n=18, 36, 54. June–October.

Introduced, scattered, mostly in counties adjacent to the Missouri River (native of Europe; introduced and weedy nearly worldwide). Roadsides, railroads, gardens, and open, disturbed areas.