207 
tooth Meridian, under C. Wuttalliz); Mexico, (Dr. Palmer, No. 
49b, 1885); also in the West Indies, South America, eastern 
India and Africa. 
* * Spikelets in dense terminal clusters. 
13. C. aristatus, Rottb. (C. inflexus, Muhl; C. confertus, 
Chapm., S. Flora, not of Swartz.) Throughout North Amer- 
ica, but local. (E. Hall, Pl. Oreg., 557, and Pl. Tex., 677.) Dr. 
Chapman’s specimens from South Florida, marked C. confertus, 
differ mainly in the reddish-brown glumes, which is the charac- 
ter given by Clarke (I. c., p. 92), for his forma verszcolor.. The 
species is widely distributed in temperate and tropi-al regions, 
not, however, occurring in Europe. 
14. C. sesleroides, HBK. Sanoita Valley, southern Arizona, 
(Rothrock, No. 614, Expl. and Surveys West of rooth Meri- 
dian) ; also in Mexico, Hartweg, No. 256; Liebmann;. Parry and 
Palmer, Nos. 910, 911 and 911%; Chihuahua, Dr. E. Palmer, 
No. 4934, 1885, named by me C. sfectabilis, which appears to be 
a totally different plant. Specimens from various other Mexican 
localities in the Gray Herbarium very closely resembling those 
here cited are determined as C. divergens, HBK., which nearly 
related, if not identical species Boeckeler and Clarke refer to 
C. spectabilis, Schreb. Following these authorities I was led into 
error in my determination of Dr. Palmer’s plant. 
Section 2. Compressz, Kunth. 
15. C. compressus, L._ Maryland and southward along the 
Atlantic and Gulf coasts to Texas (Curtiss, N. A. Plants, No. 
3026; E. Hall, Pl. Tex., 682); also in ballast at Camden and 
Philadelphia ; Mexico and Central America and in the warmer 
portions of Asia and Africa. 
16. C. Rusdyi, Britton in Bull. Torr. Bot. Club, xi., p. 29. 
Near Silver City, New Mexico, Dr. H. H. Rusby, 1880. 
17. C. Buckleyi, Britton. Valley of the Lower Rio Grande, 
(Buckley); rocky hills near Chihuahua (Pringle, Plante Mex., 
1885, No. 311); Indian Terr. (E. Palmer, 347). 
18. C. Schweinitzit, Torrey. Western Pennsylvania and 
Canada to Texas and Arizona (Lemmon, No. 2905) ; westward 
to the Pacific coast, extending north to Oregon ape ea also i in 
Mexico, (Parry and Palmer, 907). 
