MANUAL OF THE GRASSES OF THE WEST INDIES 81 
1. Sporobolus bahamensis Hack., Oesterr. Bot. Ztschr. 52: 56. 1902. 
Acklins Island, Bahamas, Eggers 3905. 
Annual; culms slender, erect, 15 to 30 cm tall; blades loosely 
involute, mostly 4 to 6 cm long, about 1 mm thick, glabrous; panicle 
oblong, open, about half the leneth of the entire culm, 3 to 4 cm wide, 
the branches capillary, ascending or spreading, mostly solitary, 
glabrous, naked on the lower part; spikelets a little more than 1 mm 
long, somewhat clustered, short- pediceled, the lateral pedicels shorter 
than the spikelet, olabrous: glumes shorter than the spikelet, nearly 
equal, 0.3 to 0.4 mm long, the first acutish, the second broader, 
obtuse; lemma and palea equal, obtuse; fruit a ‘little shorter than the 
lemma. 
Known only from the Bahamas. 
Banamas: Acklins Island, Hggers 3905; Brace 4251. 
In the Grasses of the West Indies 7! this species was referred to S. 
atrovirens (H. B. K.) Kunth, of Mexico, which differs in being peren- 
nial and in having slightly smaller spikelets short-pediceled along one 
side of the branches, the first glume only 0.2 mm long. 
2. Sporobolus tenuissimus (Schrank) Kuntze, Rev. Gen. Pl. 37: 369. 
1898. 
Panicum tenuissimum Schrank, Denkschr. Bot. Ges. Regensb. 2: 26. 
S228 seletazil 
SN ea muralis Raddi, Agrost. Bras. 33. pl. 1. f. 2. 1823. 
razil. 
Sporobolus muralis Hitche. and Chase, Contrib. U.S. Natl. Herb. 
Ikohey BOxsiome adlCHE 
Annual; culms slender, erect, compressed, glabrous, 25 to 75 cm 
tall; blades flat, 5 to 15 cm long, 1 to 3 mm wide; panicles about half 
the length of the entire culm, narrow, open, 3 to 6 cm wide, the 
branches and branchlets glabrous, capillary, spreading: spikelets 
glabrous, about 1 mm long on slender glabrous pedicels; first glume 
about one-quarter, the second about half the length of the spikelet. 
Waste ground, Lesser Antilles to Brazil. 
VirGIn Isuanps: St. John, Raunkaier 1333. Tortola, Britton and 
Shafer 698. St. Croix, Ricksecker 290. 
WinpwWarpD Isuanps: Martinique, Duss 4508; Hitchcock 16460. 
St. Lucia, Box 183; Hitchcock 16470; Kemp 13, 33; Glasgow 6. 
LrEWARD Istanps: Guadeloupe, Stehlé 275. 
TriInipAbD: Port-of-Spain, Broadway 7415. Botanic Garden, Broad- 
way 7941. 
3. Sporobolus brasiliensis (Raddi) Hack., Bull. Herb. Boiss. (2) 43: 
278. 1904. 
Aira brasilensis Raddi, Agrost. Bras. 36. 1823. Brazil. 
Eragrostis airoides Nees, Aerost. Bras. 509. 1829. Brazil. 
Culms erect, about 1 m tall: blades elongate, flat or loosely involute, 
scabrous on the upper surface, 2 to 3 mm wide; panicles rather more 
than half the entire length of the plant, 6 to 15 cm wide, open, the 
slender branches, branchlets, and pedicels spreading; spikelets 1.3 mm 
21 Contrib. U. S. Natl. Herb. 18: 369. 1917. 
