272 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
43. Panicum trichoides Swartz, Prodr. Veg. Ind. Occ. 24. 1788. 
Jamaica. 
Panicum capillaceum Lam., Tabl. Encycl. 1: 173. 1791. Puerto 
Rico. 
Annual; culms erect or branched and spreading, the ascending 
ones 20 to 40 cm long; sheaths papillose-hirsute; blades ovate or 
ovate-lanceolate, thin, cordate, 2 to 6 cm long, 1 to 2 em wide, glab- 
rous or sparsely hirsute; panicles open and spreading, 5 to 20 cm long, 
the branches and pedicels capillary; spikelets about 1.8 mm long, 
elliptic, sparsely hirsute; first glume about half as long as the spikelet 
(fig. 238). 
ieee shady places, often a weed in fields and groves, throughout 
tropical America. To be found on all the islands. 
This species has been referred in some American floras to P. 
brevifolium L., of India. 
44, Panicum trichanthum Nees, Agrost. Bras. 210. 1829. Brazil. 
Perennial; culms branching and straggling, the ascending fertile 
ones 1 to 2 m long; blades oblong-lanceolate, 10 to 15 cm long, 10 
to 15 mm wide, cordate, rather strongly nerved; panicles 10 to 30 cm 
FIGURE 238.—Pani- FIGURE 239.—Panicum FIGURE 240.—Panicum par- 
cum trichoides. trichanthum. Two vifolilum. Two views of 
Two views of spike- views of spikelet, and spikelet, and floret, X 10 
let, and floret, x 10 floret, X 10 (Fendler (type). 
(type). 1643). 
long, open and spreading; spikelets about 1.5 mm long, elliptic, 
acute; first glume less than one-fifth the length of the spikelets 
(fic. 239). 
Moist thickets and river banks, Central America and the West 
Indies to Paraguay. 
Cupa: Vento, Curtiss 598; Léon 557. Trinidad, Wright 753. 
Bayate, Ekman 4559, 6553. Romelia, Eggers 5350. 
JaMAica: Port Antonio, Hitchcock in 1890. 
Haiti: Dondou, Leonard 8571. Port-de-Pai, Leonard 12269. 
Ennery, Leonard 9157. Cabaillon, Hkman H 845. 
Dominican Repusuic: Polo, Abbott 1773. Gros-Figuier, Ekman 
ENG763: 
Puerto Rico: Ponce, Chase 6487. Cayey, Chase 6748; Sintenis 
2471. Rio Piedras, Johnston 143. 
TrinipaD: Arima, Eggers in 1883. Cedros, Hitchcock 10146. 
Port-of-Spain, Hitchcock 9943. Siparia, Broadway 4973. 
45. Panicum parvifolium Lam., Tabl. Encycl. 1: 173. 1791. Trop- 
ical America. 
Panicum oplismenoides Nash, Bull. Torrey Bot. Club 30: 381. 
1903. Puerto Rico, Heller 1316. 
Perennial, more or less glaucous; culms branching and creeping, 
rooting at the nodes, the ascending fertile ones 20 to 80 cm long; 
