Onespike Danthonia

Danthonia unispicata (Thurber) Munro; Macoun, Cat. Can PI. 4: 215. 1888.
Danthonia californica var. unispicata Thurber, in S. Wats. Bot. Calif. 2: 294. 1880. (Type "from San Diego to San Francisco, Calif.", Bolander, Parry, Lemmon.)
Merathrepta unispicata Piper, Contr. U. S. Nat. Herb. 11: 123. 1906. (Based on Danthonia unispicata Munro.) Pentameris unispicata Nelson & Macbr. Bot. Gaz. 56: 470. 1913. (Based on Danlhonia unispicala Munro.)
Culms in dense spreading tufts, 15-25 cm. tall; sheaths and blades from sparsely to conspicuously pilose, the hairs on the sheaths spreading or reflexed, the blades mostly 3-8 cm. long; panicle reduced to a single spikelet or sometimes 2, rarely 3, spikelets, the lower spikelets usually reduced, their pedicels appressed or ascending, the long pedicel of the terminal spikelet jointed with the culm; glumes mostly 15-18 mm. long; lemmas bearded on the short stipe-like callus, otherwise glabrous, 8-10 mm. long, including the acuminate awn-tipped teeth; terminal segment of the dorsal awn 4-7 mm. long; palea obtuse, nearly as long as the lemma.
Type locality: California.
Distribution: Open or rocky ground, Montana to British Columbia, and southward to Wyoming and California.