Tridens muticus (Torr.) Nash var. elongatus (Buckl.) Shinners Rough Tridens Habit: Densely tufted, erect perennial. Culms: 20-80 cm tall, not branched, often hairy at the nodes. Blades: Thick, 2-8 cm. long, 1-1.5 mm. wide, erect, rolled to flat (culm leaves shorter), tapering, glabrous or sparsely pilose, 2-23 cm long and 1.5-3.5 mm wide. Sheaths: Shorter than internodes, scabrous with lower sheaths pubescent. Ligule: Membranous, fringed lacerate, 0.4-1.0 mm long. Inflorescence: Panicles 6-21 cm long, narrow, dense, with very short, appressed branches, pale or purplish. Spikelets: Crowded, 7-11 mm. long, compressed, 3 to 11-flowered, rachilla disarticulating above the glumes and between the florets. Glumes: Narrow, acute, the first 1-nerved, 3.2-8.4 mm long, and the second 5-nerved and 3.8-8.4 mm. long. Lemmas: Broad, 4-6 mm. long, 3-nerved, pubescent on the nerves to near or above the midpoint with long silky white hairs, blunt to emarginate at the apex. Habitat: Prairies, pastures, and open woods. April-October. Kansas Range: West third. Synonyms: Tridens elongatus (Buckl.) Nash