BOTANY OF THE MAYA AREA


1. Arundinella deppeana Nees in Steud. Syn. P1. Glum. 1: 115. 1854.
 Perennial; culms erect, 1 to 2.5 m. tall, the nodes appressed hispid;
 sheaths ascending hispid, especially toward the summit; blades flat, attenu-
 ate to a fine point, 25 to 50 cm. long, 1 to 2 cm. wide, glabrous, scabrous,
 or papillose-pilose, especially toward the base; panicles dense, 30 to 50 cm.
 long, about 10 cm. wide, the numerous branches ascending; spikelets 4 to
 5 mm. long, short-pedicellate, overlapping, appressed; awns 1 cm. long,
 loosely twisted below, arcuate. Savannas, brushy slopes, and open banks,
 Mexico and the West Indies to Brazil.
 BrrTISH HONDrRAS. Belize District: Manatee Lagoon, Peck 359. El
 Cayo District: El Cayo, Bartlett 12094. Mountain Pine Ridge, Bartlett
 11583. Stann Creek District: All Pines, Schipp 791. Toledo District: Moho
 River, Peck 735.

 2. Arundinella berteroniana (Schult.) Hitchc. & Chase, Contr. U. S. Nat. Herb. 18: 290.
 1917.
 Perennial; culms tufted, rather slender, mostly 0.5 to I m. "tall; sheaths
glabrous or sparsely appressed hispid, the margins often ciliate; blades flat
or often folded or involute, 10 to 25 cm. long, 2 to 4 mm. wide, glabrous or
nearly so; panicles similar to those of A. deppeana but less dense and fewer
flowered; spikelets 3 to 4 mm. long, the awns about 1 cm. long, loosely
twisted below, arcuate. River banks, Mexico and the West Indies to Brazil.
 BEITISH HONDURAS. Belize District: Gracie Rock, Gentle 1617. El Cayo
District: Belize River, Bartlett 13138; El Cayo, Bartlett 11451.

 24. LEPTOCORYPHIUM Necs
1. Leptocoryphium lanatum (H.B.K.) Nees, Agrost. Bras. 84. 1829. Arrozillo, Pelillo.
 Perennial; culms slender, densely tufted, 0.5 to 1 m. tall; leaves some-
what crowded toward the base, the blades elongate, folded or involute,
scabrous; panicles 6 to 15 cm. long, loose, the branches ascending; spikelets
about 4 mm. long, densely pilose with pale, silky, appressed or spreading
hairs. Open grassy plains, hillsides, and pine ridges, Mexico and the West
Indies to Argentina. One of the dominant grasses of the savannas of
central Pet6n.
 BRITISH HONDURAS. Belize District: Belize River, Lundell 3872; Smart
34. Gracie Rock, Gentle 1650. Manatee Lagoon, Peck 137. Stann Creek
District: All Pines, Schipp 793. Without locality, Dunlop in 1920.
 GUATEMALA. Pet6n: La Libertad, Lundell 2287, 2288, 2393, 3670. Sa-
bana Zotz, Lundell 3597.

 25. TRICHACHNE Nees
1. Trichachne insularis (L.) Nees, Agrost. Bras. 86. 1829.
 Perennial; culms erect or somewhat decumbent at the base, usually more
than 1 m. tall; panicles dense, plume-like, silky, tawny, with narrowly
ascending racemes. Open ground and waste places, Texas to Florida,
Mexico and the West Indies to Argentina.
 BRITISH HONDURAS. Belize District: Northern River, Sampson 29.
 GUATEMALA. Pet6n: Uaxactun, Bartlett 12688.