Publication: Gen. N. Amer. Pl. 1: 87.
selected vouchers: Not at WTU; WS?
Notes: FNA24: "Hordeum pusillum grows in open grasslands, pastures, and the borders of marshes, and in disturbed places such as roadsides and waste places, often in alkaline soil. It is native, widespread, and often common in much of the Flora region. Its range extends into northern Mexico, but it is not common there."