506 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
DISTRIBUTION. 
Moist thickets and river banks, Mexico, and the West Indies to Paraguay. The type 
specimen from Mexico. 
San Luis Porosi: San Luis Potosi to Tampico, Palmer 1151 in 1879. 
Couma: Palmer 1257 in 1891. 
Veracruz: Motzorongo, Smith 585. Veracruz, Hitchcock 6584. Jicaltepec, Lieb- 
mann 320. Colipa, Liebmann 432. Without locality, Miiller 2172. 
CamprecHe: Near Champotén, Collins 37. 
British Honpuras: Tolédo, Peck 775 (Gray Herb.). 
GuaTEMALA: Gualin, Deam 424, Puerto Barrios, Hitchcock 9149. Morales, 
Kellerman 6272. Finca Trece 
Aguas, Lewton 377. Cubil- 
quitz, Tiirckheim 7798. 
Honpuras: San Pedro Sula, Thieme 
5587. 
NicaraGcua: Jinotepe,  I/itchcock 
8669, 8682. 
Costa Rica: Port Limon, J//itch- 
cock 8434. Talamanca, Tonduz 
8600, 8670. 
PanaMA: LagunadeChiriquf, Hart 
87. Culebra, Hitchcock 7895, 
Frijoles, Mazon 4703. Panama, Hitchcock 9212. Tabernilla, Pittier 3824, 
Hitchcock 8383. Gamboa, Pittier 4798. Balboa, Hitchcock 8015, 
Cusa: Trinidad, Wright 753. Vento, Curtiss 598, Leén 557. Romelie, Eggers 
5350. 
Jamaica: Port Antonio, Hitchcock in 1890. 
Porto Rico: Cayey, Sintenis 2471, Chase 6748. Peiiuelas, Chase 6487, Rio Pie- 
dras, Johnston 143. 
TrinipaD: Port of Spain, Hitchcock 9943. Cedros, Hitchcock 10146. 
VENEZUELA: Tovar, Mendler 1443, 
JOLOMBIA: Santa Marta, Smith 2151. 
Fig. 91.—Distribution of P. trichanthum. 
PARVIFOLIA. 
Perennials, usually glaucous; culms more or less decumbent; panicles small, diffuse, 
the spikelets small, turgid or subglobose, glabrous, the first glume more than half the 
length of the spikelet. 
Culms very slender, decumbent or creeping; blades 1 to 3 cm. 
IONG. 2. ee eee neces 69. P. parvifolium. 
Culms firm, erect or decumbent at base only; blades 3 to 8 cm. 
long... 2-2-2222 eee eee eee eee eee eee 70. P. cyanescens. 
69. Panicum parvifolium Lam. 
Panicum parvifolium Lam. Tabl. Encycl. 1: 173. 1791; Contr. U. 8. Nat. Herb. 15: 
134. 1910.’ 
The blades in this species vary in shape from oblong or ovate-lanceolate to narrowly 
lanceolate, in surface from glabrous to densely appressed-hirsute, and in texture from 
thin to firm. One form, in aspect approaching P. cyanescens, has firm pubescent erect 
blades, as much as 5 mm. wide and 4.5 cm. long. Thisis represented by Broadway 
2372 in part and Hitchcock 10065, both from Trinidad. Panicum brasiliense Spreng. is 
a pubescent form with oblong-lanceolate moderately firm blades. It does not appear 
possible to recognize this form as a distinct species. 
