320 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
branches; sheaths glabrous, or rarely slightly scabrous, ciliate on the 
margin, sometimes a little papillose near the summit, overlapping on 
the flowering shoots; ligule of stiff hairs as much as 5 mm long; 
blades narrowly lanceolate, as much as 20 cm long and 2 cm wide, 
long-acuminate, scabrous, sometimes becoming smoothish, often 
papillose on the margin at base; panicles ovoid or ellipsoid, as much 
as 12 cm long and 10 cm wide, rounded at summit, the branches 
ascending or the lower finally spreading, branched from about the 
middle, the spikelets somewhat aggregate on the branchlets, the 
panicle thus rather compactly flowered at the periphery, the pedicels 
0.5 to 2 mm long; spikelets about 1.5 mm long; glumes glabrous or 
with a few short stiff hairs at the summit; florets glabrous (fig. 294). 
Wooded hillsides, Jamaica, at 1,000 to 2,000 m altitude; Mexico 
to Bolivia and Trinidad. 
JAMAICA: Catherines Peak, Hitchcock 9728 (Amer. Gr. Nat. Herb. 
418); Eggers 3583. Hardware Gap, Ridley 14. Track to Mabess 
River, Perkins 1089. Mount Lebanon, Harris 12487. Bryans Hill, 
Harris 11529. Content Gap, Harris 11517. Wallenford, Harris 
11551, 11567. Cuna Cuna Gap, Mazon 9160. Morces Gap, Mazon 
and Killip 745. Abbey Green, Hitchcock 9386. Cold Spring Gap, 
Harris VV33, 12491" Flamstead, Harris 11468, 11581. Whitfield 
Hall, Harris 11583. Farm Hill, Orcutt 3679. Gordon Town, Hart 
708. 
LEEWARD ISLANDs: St. Kitts, Bor 152. Nevis, Bor 169. 
TRINIDAD: Blanchisseuse Road, Broadway 6746. 
8. Isachne disperma (Lam.) Doell, in Mart., Fl. Bras. 27: 274. 1877. 
Panicum dispermum Lam., Tabl. Encycl. 1: 173. 1791. Tropical 
America. 
Panicum multinerve Desy.; Poir., in Lam., Encycl. Sup. 4: 279. 
1816. Antilles. 
Panicum confertum Desv.; Poir., in Lam., Encycl. Sup. 4: 279. 
1816. Antilles. 
Aspect of plant as in J. arundinacea; sheaths glabrous or rarely 
papillose-hispidulous; ligule hairs as much as 2 mm long; blades on 
the average larger than in J. arundinacea, glabrous, scabrous toward 
the apex; panicles as much as 20 cm long, the branches and branchlets 
spreading, the spikelets in twos or threes at the ends of the branch- 
lets, the panicle thus more open and flowered more equally through- 
out than in J. arundinacea, the spikelets not strongly aggregate 
toward the periphery; spikelets slightly over 1 mm long; glumes and 
florets glabrous. 
Mountain woods, Lesser Antilles. 
Lerwarp IsLanps: St. Kitts, Britton and Cowell 395. Guadeloupe, 
Duss 3189. Dominica, Jones 38: Eggers 1056. 
WINDWARD Isuanps: Martinique, Duss 1311. Grenada, Broadway 
76. 
Tosaco: Hitchcock 10279 (Amer. Gr. Nat. Herb. 597). 
87. OPLISMENUS Beauv., Fl. Owar. 2: 14. pl. 68.f.1. 1809 
Spikelets terete or somewhat laterally compressed, subsessile, 
solitary or in pairs, in two rows, crowded or approximate on one side 
of a narrow scabrous or hairy rachis: elumes about equal, emarginate 
2-lobed, awned from between the lobes; sterile lemma exceeding 
