213 



46. C. refracttis, Engelm. (Boeckeler, in Linnaea, xxxvi., p. 

 369 ; see also Vasey, in Bull. Torn Bot. Club, x., p. 32.) Trenton, 

 N. J., to North Carolina and Missouri. Appears to me nearest 

 allied to C. strigosus, but is also related to C. Lancastriensis, 

 Porter. 



47. C. filiforviis, Swartz. Southern Florida ; also in the 

 West Indies. The Florida specimens do not quite agree with 

 C. Wright's from Cuba. 



48. C. brunneus, Swartz. (C piirpiirascens, Vahl ; C. ligii- 

 laris, Chapm., S. Flora, p. 507, not of L. nor of Chapm. Suppl., p. 

 659.) Southern Florida (Curtiss, N. A. Plants, No. 3025*), and 

 in the West Indies. 



49. C. tetragoJiHS, Ell. North Carolina and Florida (Cur- 

 tiss, No. 3059) to Texas; also in Mexico (fide Hemsley.) 



50. C. dissitijiorus, Torrey. P'lorida to Louisiana and 

 Texas. (E. Hall, Plantee Texanse, No. 690, distributed as 

 C. litos, Schultes) ; also in Mexico and Brazil (fide Boeckeler.) 



Section 9. Papyri, Kunth. 



51. C. gigantcus, Vahl. i^C. erythrorhizos, Muhl., var. 

 erectus, Britton, in Bull. Torr. Bot. Club, xi., p. 85 ; C. densi- 

 Jlorus, Meyer.) Texas and Mexico (Herb. Berland. Texano* 



Mexicanum, Nos. 876, 3223 and 2306; Buckley; Nealley.) 

 Cuba (C. Wright, No. 1529.) 



52. C. erythrorJiizos, Muhl. Lawrence, Mass., (Robinson); 

 Hartford, Conn., (fide Bishop, Cat. Plants Conn., p. 17); eastern 

 Long Island (E. S. Miller) ; Camden, N. J., (Martindale), and 

 southward to Florida and New Mexico ; also in California. 



Var. pumilus, Engelm. {^C. occidentalis, Torrey.) Missouri 

 to California, extending northward to Oregon (E. Hall, PI. 

 Oreg., No. 558), and Washington (Suksdorf, 221.) 



53. C. HalEI, Torrey, ined., in letter to Mr. Charles Mohr, 

 1868, who has kindly furnished me with the following descrip- 

 tion : 



Umbels many-rayed, shorter than the involucral bracts; 

 spikes cylindrical, one-half to three-fourths inch long,^sessile or 

 stalked, forming dense clusters with a few linear, acuminate in- 

 volucels; spikelets flat, 12 to 14-flowered ; scales with scarious 

 margins, brown, sharply carinate on the back, indistinctly 



