216 



3 dense ovate heads, about half an inch long ; spikelets lanceo- 

 late, 4 to 5-flo\vered; glumes lanceolate, acute; achenium ovoid, 

 triangular. 



New Mexico (C. Wright, No. 1947) ; Mexico (F. Miiller, 

 without a number). 



ft Spikelels several (4 to 12) flowered. 



66. C. Jzliculinis, Vahl. Northumberland Co., Canada 

 (Macoun), to Wisconsin and southward to Florida (Curtiss, No. 

 3036) and Texas. Varies into very slender forms with small, 

 single heads. 



6^. C. Gray it, Torrey. {C. setifoliiis, Torrey MS., and 

 Clarke, 1. c, xxi., p. 198.) Sandy plains along the Atlantic 

 coast, Massachusetts to Florida. C. ovularis, var. tcnelliis, Tor- 

 rey, Ann. Lye, iii., p. 279, is a young form of this. 



68. C. Baldwinii, Torrey. North Carolina and Florida, 

 (Curtiss, No. 3025) westward to Texas (E. Hall, No. 687 ; E. 

 Palmer (Flor. S. W. Texas, No. 1332); also in ballast at Camden 

 (Parker.) 



69. C. Lancastriensis, Porter. Trenton, N. J. ; Safe Har- 

 bor, Penn., (Porter) to Alabama. 



70. C. fiiligi)ieiis,Q\\2Cf^\\'\. Key West (Chapman ; Garber.) 



* * Umbel compound. 



71. C. Calif orniais, Watson. {C. speciosus, Torrey, Bot. 

 Mex. Bound. Survey.) California (Fitch, in Torrey Herb.) 



72. C. Pringlei^ Britton. Catalina Mountains, southern 

 Arizona (Pringle.) 



J I. C. ligularis, L. (Not of Chapm., S. Flora, p. 507.) South- 

 ern Florida (Palmer, 1874, No. 532; Curtiss, N. A. Plants, No. 

 3046} ; also in Mexico, the West Indies, South America and 

 tropical Africa and Australia. 



