Muhlenbergia cuspidata (Torr.) Rydb.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Culms tufted, 2–7 dm, slender, stiff and strictly erect, somewhat bulbous-thickened at base or with bulb-like offsets; ligule 0.5 mm or less; blades erect or nearly so, flat or involute, 1–2 mm wide; panicle very slender and spike-like, the appressed lateral branches 5–15 mm; glumes lance-subulate, subequal, 1.7–2.8 mm; lemma 2.8–4.1 mm, slender, acuminate, awnless, minutely pubescent on the back, otherwise glabrous. Prairies and open hillsides, in dry or gravelly soil; Alta. to N.M., e. to Mich., O., Ky., and Mo.