Sporobolus brevipilis (Torr.) P. M. Peterson

Calamovilfa brevipilis (Torr.) vScribn. in Hack. True Grasses
113. 1890.
Arundo brevipilis Torr. Fl. U. S. 1: 95. 1823.
Calamagrostis brevipilis L. C. Beck, Bot. U. S. 401. 1833. (Based on Arundo brevipilis Torr.) Ammophila brevipilis Benth.; Vasey, Grasses U. S. 29. 1883. (Based on Calamagrostis brevipilis Beck.)
Culms solitary or few, compressed, glabrous, about 3-noded, 60-120 cm. tall, the base as in C. Curtissii; sheaths glabrous; ligule as in C. Curtissii; blades elongate, 2-3 mm. wide, flat to subin volute, slightly scabrous on the margins and the filiform tip; panicle brown or purple, subpyramidal, rather open, 10-25 cm. long, the axis glabrous or nearly so, the branches ascending, flexuous, glabrous, naked below, as much as 10 cm. long; spikelets 4.5-6 mm. long, the pedicel scabrous, sparsely villous at summit; glumes acuminate, scaberulous toward the summit, the first 2-2.5 mm., the second about 4 mm. long; lemma and palea about equal, or the latter longer, villous below, scaberulous above.
TvPR locality: Quaker Bridge, New Jersey.
Distribution: Marshes and river banks. New Jersey and North Carohna, rare.