390 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
lax blades and narrow, few-flowered, interruptedly spikelike panicles 
like the type of S. rariflora. WSetaria setosa is confined to the West 
Indies and adjacent parts of South America. 
Dry hills, West Indies to Brazil. 
Cusa: Isla de Pinos, Ekman 11728. 
Purrto Rico: Boqueron, Chase 6502. 
VirGIN Isuanps: St. Croix, Ricksecker 67. St. Thomas, Orsted. 
LrEWARD Isitanps: Antigua, Wullschlaegel 629. 
18. Setaria macrosperma (Scribn. and Merr.) Schum., Just’s Bot. 
Jahresber. 28': 417. 1902. 
Chaetochloa macrosperma Scribn. and Merr., U. S. Dept. Agr., 
Div. Acrost. Bull. 21-933) 2. 18) 190024) Hlonidas 
| Plant perennial, often 
in large tufts; culms 
usually more or less 
geniculate at base and 
often rooting at the 
lower nodes, smooth, 
scabrous below the 
panicle, rather stout, 
1 to 1.5 m tall; blades 
flat, very scabrous on 
the upper surface, 
smooth or scaberulous 
beneath, as much as 50 
em long and 2 cm wide; 
panicle rather loose, 
tapering above, as much 
as 25 cm long (the sec- 
ondary panicles much 
smaller and more com- 
pact), the branches 
ascending, as much as 
2 cm long, about equally 
distributed, the panicle 
/ thus not interrupted or 
FIGURE 321.—Setaria macrosperma, X 1 (Curtiss 3617). lobed; spikelets about 
3 mm long, lanceolate- 
ovate, the bristles 1.5 to 3 cm long; fertile lemma acute, finely and 
not very distinctly cross-wrinkled (fig. 321). 
Open ground, mostly on coral rock or coral sand, Florida and the 
Bahamas. 
Bauamas: Frozen Cay, Berry Islands, Britton and Millspaugh 2203 
(N. Y. Bot. Gard. Herb.). 
19. Setaria vulpiseta (Lam.) Roem. and Schult., Syst. Veg. 2: 495. 
Sie 
Pamcum vulpisetum Lam., Encycl. 4: 735 (err. typ. 745). 1798. 
Santo Domingo. 
Chaetochloa vulpiseta Hitche. and Chase, Contrib. U.S. Natl. Herb. 
Soe Osun Osi (ee 
Perennial, branching at base, often in large tufts; culms stout, often 
decumbent at base, as much as 2 m tall; blades flat, gradually narrowed 
from the middle toward both ends, the larger somewhat plaited, 
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