MANUAL OF THE GRASSES OF THE WEST INDIES 289 
Sandy woods, southeastern United States; Cuba; Central America; 
Florida. 
Cusa: Herradura, Ekman 10687; Hitchcock 555, 23433. Guane, 
Léon 7009, 15395. Sumidero, eon 3466, 7006. Isla de Pinos, 
Taylor 32; Britton and Wilson 14283, 15383. 
81. Panicum trifolium Nash, Bull. Torrey 
Bot. Club 26: 580. 1899. Georgia. 
Similar to P. albomarginatum, differing Sy gi We 
chiefly in the following: Culms in smaller TA KZ 
tufts, more slender, erect: leaves less con- fo 3 
spicuously crowded ‘at the ‘base, not so stiff, SS 
and the basal proportionately not so much ‘ = 
longer than those of the midculm; sheaths e S| 
much shorter than the elongate internodes; | 
blades 3 to 5 em long, 4 to 5 mm wide, less 
thick and firm, the uppermost blade not 
reduced. Autumnal phase erect or leaning, 
sparingly branched from 
the middle and upper 
nodes (fig. 273). 
Sandy woods, south- 
pete United States; 
Cuba. 
“chamaclonche. ‘Two Cusa: Pinar del Rio, 
ene ine. Hitchcock 23270, 23300. 
Herradura, Mitchcock 
23437. San Diego de los Bafios, Léon 4454. 
Guane, Léon 6943. Banao Mountains, Léon 
2749. 
82. Panicum chamaelonche Trin., Gram. 
Pan. 242. 1826. North America. 
Vernal culms densely tufted, glabrous, 
ascending or erect, 10 to 20 cm tall; sheaths 
glabrous; ligule 0.2 mm long; blades firm, 
ascending, 1.5 to 4 cm long, 2 to 3 mm wide, 
more or less involute-pointed, glabrous; 
panicles 2.5 to 5 cm long; spikelets a little 
more than 1 mm long, glabrous. Autumnal 
phase freely branching from the base and 
lower nodes, forming dense cushions, the 
os reduced blades drying involute 
(fig. 274). 
Open sandy soil and low pine barrens, perwacciows. of opikclate and 
southeastern United States and British Hon- = "ts X 10 (type). 
duras; Cuba, found in “white sand.” 
Cuspa: Damuji, Ekman 11047. Pinar del Rio, Ekman 11465. 
Isla de Pinos, Britton and Wilson 14218, 14221; Ekman 12098, 12152. 
83. Panicum portoricense Desv.; Hamilt., Prodr. Pl. Ind. Occ. 11. 
1825. Puerto Rico. 
Vernal culms erect or geniculate at base, slender, stiff and wiry, 
crisp-puberulent to nearly glabrous, 15 to 30 cm tall; sheaths much 
shorter than the internodes, glabrous or crisp-puberulent; blades firm, 
2 to 5 cm long, 3 to 6 mm wide, glabrous to puberulent; panicles 2 to 
