Sporobolus macrus

Sporobolus macrus (Trin.) Hitchc. Amer. Jour. Bot. 2: 303
1915.
Yilfa macro. Trin. Mem. Acad. St.-Petersb. VI. Sci. Nat. 6 2 : 79. 1840.
Perennial, with short scaly creeping rhizomes 2-3 cm. long, the scales closely imbricate; culms erect, glabrous, one or two in small colonies, 50-70 cm. tall; sheaths glabrous, pilose about the throat and the upper surface of the blades near base; ligule very short, a mere trace, the base of the blade folded in around it; blades flat or more or less involute, glabrous except at base, 10-20 cm. long, 1-3 mm. wide; panicles narrow, mostly inclosed at base, 5-15 cm. long, the branches erect; spikelets 4-5 mm. long, compressed, glabrous; glumes acutish, the first about two thirds as long as the spikelet, the second a little longer than the first, lemma and palea subequal or the palea a little longer, the tips boat-shaped.
Type locality: Louisiana.
Distribution: Wet pine land, Oklahoma, Mississippi, and Louisiana.