212 
Var. robustior, Kunth, Enum., ii, p. 88. Spikelets large, 
elongated, 10 to 25-flowered. With the type. 
Var. capitatus, Boeckl., Linnea, xxxvi., p. 347. Inflores- 
cence of several capitate clusters, rays short. Indiana (Dr. 
Clapp, 1838); St. Louis, Mo., (Engelmann); Illinois (Dr. 
Schneck); Massachusetts (Morong); Camden, N. J., (Martin- 
dale); Texas, (Bigelow.) 
Var.. COMPOSITUS, n. var. (C. strigosus, var. Torrey, Ann. 
Lyc., iii., p. 262.) Umbel compound; spikelets one-third to 
one-half inch long, 4 to 5-flowered. Astoria, Long Island 
(Leggett) ; Peunsylvania and New Jersey to Alabama. 
Var. GRACILIS, n. var. Slender, leaves shorter than the 
‘culm, umbel of. 1-3 short rays, bearing few, linear, spreading 
spikelets. Valley of the Lower Rio Grande (Buckley) ; Fayette- 
ville, Ark., (Harvey.} 
Var. ELONGATUS. (C. Michauxianus, var. (?) elongatus, Tor- 
rey, Ann. Lyc., iii, p. 432 (?). Rays much elongated, bearing 
‘single, capitate clusters. North Carolina (Curtis, in Torrey 
Herb.) The originals of Dr. Torrey’s variety were collected by 
Drummond in Texas, but there are no specimens from there in 
his herbarium, and I have no means of knowing if they are the 
‘same as the one from North Carolina on which the present variety 
is based, ; 
43.\.C. stenolepis, Torrey. North Carolina to Florida and 
. Texas. — 
44. C. setigerus, Torr. and Hook. (Including C. lutescens, 
Torrey, Bot. Mex. Bound. Survey, p. 227, and Herbarium.) 
Texas and New Mexico (C. Wright, No. 705; Buckley; Bigelow, 
and Herb. Berland, Texano-Mexicanum, Nos. 2410 and 980.) 
I can see no reason for keeping the two species separate, and Dr. 
Torrey states (I. c.) that his C. dutescens is probably too close to 
C. setigerus. 
- 45. C. sphacelatus, Rottb. Southern Nevada (Lieut. 
‘Wheeler, 1871, in Gray Herbarium); Cal. (Parish) ; ballast, 
Mobile, Ala., (Mohr.); the specimens almost exactly match the 
_ ;others from St. Thomas, W. I. (Eggers), and No. 636, Sagot, 
_ Guyane Francaise. Resembles the last, but the glumes are . 
brown-margined., 
