Muhlenbergia sobolifera (Muhl.) Rock Muhly Habit: Perennial, leafy towards the summit, with numerous creeping scaly rhizomes, 2-3 mm. thick. Culms: Erect or ascending, sparingly branches, 60-100 cm. tall, solitary or few in a tuft, scabrous below the glabrous nodes. Blades: Flat, narrow towards the base, 8-12 cm. long, 3-8 mm. wide, occasionally larger at the time of flowering, aggregated along the middle part of the culm, scabrous. Sheaths: Shorter than the internodes, or those of the branches overlapping. Ligule: A short membrane, truncate. Inflorescence: Panicle slender, somewhat nodding, 5-15 cm. long, finally exserted, the branches appressed, spikelet bearing from the base, overlapping above, spikelets on short scabrous pedicels, lateral panicles if present much shorter. Spikelets: Mostly 2-2.5 mm. long, 1-flowered, flower perfect, rachilla disarticulating above the glumes. Glumes: Subequal, 1-1.7 mm. long, broadly ovate, abruptly acuminate or awn-tipped, half to three fourths as long as the lemma, scabrous especially on the keel. Lemmas: 3-nerved, the midnerve produced into a short point, obtuse, elliptic, membranous, pubescent on the lower half, scabrous above. Palea: Thin, subequal. Fruit: Grain closely enveloped by the lemma. Habitat: Rocky woods and thickets, cliffs and shrubbery. September-October. Kansas Range: East half and Sheridan county. Synonyms: Muhlenbergia sobolifera (Muhl. ex Willd.) Trin. var. setigera Scribn.