Pullup Muhly

Muhlenbergia filiformis (Thurb.) Rydb. Bull. Torrey Club 32: 600. 1905.
Vilfa depauperala var. filiformis Thurb. ; S. Wats. Bot. King's Expl. 376. 1871
F8;/a«reci7/»Ma Thurb. in S.Wats. Bot. Calif. 2: 268. 1880. (Type from CaHfornia.) tiot Muhlenbergia gracillima Torr. 1856.
Sporobolus gracillimus Vasey, Cat. Grasses U. S. 44. 1885. (Based on Vilfa gracillima Thurb.)
Sporobolus filiformis Rydb. Contr. U. S. Nat. Herb. 3: 189. 1895. (Based on Vilfa depauperata var. filiformis Thurb.)
Sporobolus depaupcratus var. filiformis Beal, Grasses N. Am. 2: 296. 1896. (Tvpc from Montana.)
Sporobolus simplex Scribn. Bull. U. S. Dep. Agr. Agrost. 11: 48. 1898. (Type from Georgetown, Colorado, Rydberg 2411.)
Sporobolus aristatus Rydb. Bull. Torrey Chib 28: 266. 1901. (Type from Big Horn Mountains, Wyoming, Tweedy 2196.)
Sporobolus simplex var. thermale Merr. Rhodora 4: 48. 1902. (Type from Lolo Hot Springs, Montana, Griffiths 302a.)
Muhlenbergia simplex Rydb. Bull. Torrey Club 32: 600. 1905. (Based on Sporobolus simplex Scribn.) Not M. simplex Kunth. 1829.
Muhlenbergia aristulata Rydb. Bull. Torrev Club 32: 600. 1905. (Based on Sporobolus aristatus Rydb.) Annual; culms cespitose, rather soft and lax, erect or somewhat spreading, glabrous, filiform, usually 5-15 cm. tall, sometimes as much as 30 cm.; ligule thin, 1-2 mm. long; blades flat, glabrous beneath, scabrous-pubescent on the upper surface, usually less than 3 cm. long and 1 mm. wide; panicles numerous, narrow, interrupted, few-flowered, usually less than 5 cm. long; glumes ovate, about equal, obtuse or acutish, awnless, 1 mm. long; lemma lanceolate, acute, mucronate, minutely pubescent, scaberulous at tip, 1 mm. long, the callus glabrous.
Type LOCALiri': Yosemite Valley. California (Bolander 6001).
Distribution: Open woods and mountain meadows. South Dakota and Kansas to British Columbia, and southward to New Mexico and California. A somewhat stouter form with thicker panicles has been called M. simplex Rydb.