MANUAL OF THE GRASSES OF THE WEST INDIES 349 
Britton, Cowell, and Hess 1604; Hess 424. Culebra Island, Britton 
and Wheeler 18, 2338. 
VirGINn IsuaANps: St. Croix, Thompson 3438, 446, 488; Ricksecker 407. 
St. Thomas, Eggers in 1882; Hitchcock 16303, 16312. Virgin Gorda, 
Fishlock 57. St. John, Britton and Shafer 631. 
LEEWARD Isuanps: Antigua, Box 109. Guadeloupe, Duss 2698, 
3188; Stehlé 289. Nevis, Box 174. Dominica, Jones 34. 
TRINIDAD: Chacachacare, Hitchcock 10059. 
16. Setaria leiophylia (Nees) Kunth, Rév. Gram. 1: Sup. XII. 1830. 
Panicum leiophyllum Nees, Agrost. Bras. 249. 1829. Brazil. 
Differing from Setaria setosa in the thinner broader flat, glabrous 
blades as much as 2 cm wide; 
panicle as much as 30 cm 
long, the branches ascending 
or spreading, as much as 3.5 
em long, overlapping or the 
lower distant. 
Shady places, in damp or 
rather dry soil, West Indies, 
rare; Brazil. 
Haiti: St. Marc, mountain 
slopes, common, Leonard 2992. 
Purrto Rico: Ponce, dry 
brushy limestone hillside, 
Chase 6488. Desecheo, shade 
of mixed forest, Hess 426. 
LrEwarp Isuanps: Anti- 
gua, shady wooded places, 
Box 16, rocky damp ground 
by roadside in woodland, Box 
83; woods on dry limestone 
hill, Box 88. 
17. Setaria rariflora Mikan; 
Trin., in Spreng., Neu. 
hpi 278. 1821. 
Brazil. 
Setaria vaginata Spreng., © ; 
Syst. Veg. 4: Cur. Post. 33. FIGURE 320.—Setaria rariflora, X 1 (Ricksecker 67). 
1827. Brazil. 
Chaetochloa rariflora Hitche. and Chase, Contrib. U.S. Natl. Herb. 
18: 349. 1917. 
Perennial; culms erect or decumbent at base, 30 to 60 cm tall; 
sheaths pubescent or glabrate, keeled, mostly overlapping; blades 
elongate, pubescent on both surfaces, narrow at base, usually 2 to 3 
mm wide; panicles narrow, tapering above, 10 to 15 cm long, often less, 
the branches ascending, the lower 5 to 10 mm long, often shorter; 
spikelets about 2 mm long, the bristles 4 to 7 mm long; fertile lemma 
finely and sharply cross-ridged (fig. 320). 
This species differs from S. setosa chiefly in the long narrow blades 
and the usually narrower and less bristly panicle. The second glume 
is shorter and usually 7-nerved. The two forms are given specific 
rank because the specimens from Brazil agree in having slender, rather 
