506 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
DISTRIBUTION. 
Moist thickets and river banks, Mexico, and the West Indies to Paraguay. The type 
specimen from Mexico. 
Sawn Luis Porost: San Luis Potosi to Tampico, Palmer 1151 in 1879. 
Cotma: Palmer 1257 in 1891. 
Veracruz: Motzorongo, Smith 585. Veracruz, Hitchcock 6584. Jicaltepec, Lieb- 
mann 320. Colipa, Liebmann 432. Without locality, Miiller 2172. 
CampecHe: Near Champotén, Collins 37. 
British Honpuras: Toledo, Peck 775 (Gray Herb.). 
GuaTEMALA: Gualan, Deam 424, Puerto Barrios, Hitchcock 9149. Morales, 
Kellerman 6272. Finca Trece 
Aguas, Lewton 377. Cubil- 
quitz, Tiirckheim 7798. 
Honpuras: San Pedro Sula, Thieme 
5587. 
NicaRaGua: Jinotepe, Hitcheoct: 
8669, 8682. 
Costa Rica: Port Limon, Hitch- 
cock 8434. Talamanca, Tonduz 
8600, 8670. 
Panama: Laguna deChiriqui, Hart 
87. Culebra, Hitchcock 7895. 
Frijoles, Maxon 4703. Panama, Hitchcock 9212. Tabernilla, Pittier 3824, 
Mitchcock 8383. Gamboa, Ptitier 4798. Balboa, Hitchcock 8015. 
Cupa: Trinidad, Wright 753. Vento, Curtiss 598, Leén 557. Romelie, Eggers 
5350. 
Jamatca: Port Antonio, Hitchcock in 1890. 
Porto Rico: Cayey, Sintenis 2471, Chase 6748. Pefiuelas, Chase 6487. Rio Pie- 
dras, Johnston 143. 
TRINIDAD: Port of Spain, Hitchcock 9943. Cedros, Hitchcock 10146. 
VENEZUELA: Tovar, Fendler 1443. 
Cotomsta: 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 siender, decumbent or creeping; blades 1 to 3 cm. 
MOTI ie fee Ws Seen kt Sa ieee Aes | ene es ee ge er 69. P. parvifolium. 
Culms firm, erect or decumbent at base only; blades 3 to 8 cm. 
ROM Ge etal gu pe pa 25 lay REA ts 7a Se A Ee ee a 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. 
