Thrasya campylostachya (Hack.) Chase

Thrasya campylostachya (Hack.) Chase, Proc. Biol. Soc
Wash. 24: 115. 1911.
Panicum. cam-pylosiachyum, Hack. Oesterr. Bot. Zeits. 51 : 367. 1901.
Stems up to 1 m. tall, with several naked raceme-bearing branches arising from the uppermost sheath; leaf-sheaths papillose-pubescent; blades up to 1.5 dm. long, 5-8 mm. wide, rigid, pubescent; racemes solitary at the apex of the stem and branches, slender, usually somewhat cturved, 4-6 cm. long; spikelets loosely imbricate, spreading from the rachis, about 2.5 mm. long, glabrous, pale-green, the first scale one fourth to one third as long as the spikelet, ovate, obtuse, nerveless, the second scale about three fourths as long as the spikelet, oval, obscurely 3-nerved, obtuse, convex, the third scale as long as the spikelet, obtuse, oval, flat, with a broad furrow down the middle, the fourth or fruiting scale obtuse, oval, very convex, scaberulous.
Type locality : In savannas at Canas Gordas, Costa Rica, Distribution : Guatemala to Costa Rica.