HITCHCOCK AND CHASE—GRASSES OF THE WEST INDIES. 321 
57. Paspalum unispicatum (Scribn. & Merr.) Nash, N. Amer, Fl. 17: 193. 1912. 
Panicum (Dimorphostachys) unispicatwm Seribn. & Merr. U. 8. Dept. Agr. 
Div. Agrost. Bull. 24: 14. 1901. 
Perennial from hard scaly rhizomes, the ascending, sparingly branching 
culms 18 to 45 em. tall; blades flat, 8 to 25 cm. long, 6 to 8 mm. wide, pilose 
on the upper surface at the base and commonly with a few scattered hairs near 
the margin; racemes 1 or 2, erect or suberect, 5 to 9 cm. long, the rachis 1 mm. 
wide; spikelets in pairs, closely imbricate, pale greenish stramineous, glabrous, 
obovate, subacute, 2.6 to 8 mm. long, 1.5 mm. wide; first glume of the upper 
pair of spikelets flat, nerveless or faintly nerved, one-third to two-thirds as 
long as the spikelet, that of the lower carinate, two-thirds to three-fourths as 
long as the spikelet. 
Open slopes and dry ground, southern Texas and Cuba (valley of the Rfo 
Zaza and near Habana) to Venezuela. Originally described from Oaxaca. 
58. Paspalum pilosum Lam. Tabl. Encycl. 1: 175. 1791. 
Panicum monostachyum H. B. K. Nov. Gen. & Sp. 1: 96. 1816. 
Similar to the preceding, stoloniferous rather than rhizomatous, the culms 
more compressed, the foliage harshly pubescent ; racemes solitary, commonly 10 
to 15 cm. long, erect-arcuate, the rachis rarely sparsely pilose; spikelets 
blunter, the first glume usually less developed. 
Savannas and dryish open ground, Costa Rica to Trinidad and Brazil. 
Originally described from tropical America; Panicum monostachyum de- 
scribed from Venezuela. The name P. pilosum is here tentatively applied. It 
may belong to Panicum monobotrys Trin., in which the rachis is more frequently 
pilose. 
59. Paspalum pulchellum Kunth, Mém, Mus. Par. 2: 68. 1815. 
Reimaria elegans Humb. & Bonpl.; Fliigge, Monogr. Pasp. 216. 1810, not Pas- 
palum elegans Fliigge, op. cit. 183. 
Perennial, in dense tufts, the slender simple culms 80 to 75 cm. tall, the pilose 
linear subinvolute blades clustered at the base, the culm sheaths bladeless or 
nearly so; racemes 2 or 3, approximate, spreading, 2 to 6 cm. long, the solitary 
glabrous oval spikelets about 1.8 mm. long; both glumes wanting, the sterile 
lemma tinged with red, sometimes dark crimson; fruit pale, smooth and 
shining. 
Savannas, West Indies and northern South America. Originally described 
from Venezuela, the two names given above based on the same collection. 
Cuba, Santo Domingo, and Trinidad. 
60. Paspalum saccharoides Nees in Trin. Gram. Icon. 1: pl. 107. 1828. 
Saccharum polystachyum Swartz, Prodr. Veg. Ind. Occ. 21. 1788, not Paspalum 
polystachyum R. Br. 1810. 
Panicum saccharoides Kunth, Rév. Gram, 1: 237, pl. 30. 1830. 
Moenchia speciosa Wender.; Steud. Nom. Bot. ed. 2. 2: 153. 1841. 
Tricholaena saccharoides Griseb, Syst. Unt. Veg. Karaib. 117. 1857. 
Syllepis polystachya Fourn. in Hack. in Mart. Fl. Bras, 2°: 251. 1883, as 
synonym of Imperata caudata; Fourn. Mex. Pl. 2: 52. 1886, the name based 
on Saccharum polystachyum Swartz, but misapplied to a species of 
Imperata. 
Paspalum polystachyum Kuntze, Rev. Gen, Pl. 2: 786. 1891, not R. Br. 1810. 
A robust tufted stoloniferous perennial, the branching culms often 2 meters 
tall, the overlapping sheaths ciliate, the long flat blades 1 to 1.5 cm. wide, 
involute toward the apex, pale and appressed-pubescent on the upper surface; 
racemes numerous, commonly 15 cm. or more long, slender, drooping, forming 
