Paspalum pectinatum Nees

Paspalum pectinatum Nees, Agrost. Bras. 34. 1829
Stems up to 8 dm. tall, tufted, glabrous, simple; leaf -sheaths strongly striate, the basal glabrous, firm and thick, the upper glabrous or pubescent; blades up to 2.5 dm. long, 3-5 mm. wide, linear, long-acuminate, hirsute; racemes in pairs, conjugate, with sometimes another a short distance below, 3—6 cm. long, erect, the rachis 1.5-2 mm. wide; spikelets singly disposed, 5-6 mm. long, the first scale wanting, the second scale 3-nerved, or imperfectly 5-nerved, membranous, thin, ciliolate, with a broad wing, the third scale 3-nerved, tuberculate-hispid on the back, strongly tuberculate-ciliate, the fruiting scale thin, elliptic, obtuse, pubescent at the apex.
Type locality: Southern Brazil.
Distribution: Costa Rica and Panama; also in Colombia and Brazil.