215 



Arkansas (Harvey) ; Indian Territory (G. D. Butler) ; Louisiana 

 (Langlois). 



Var. sphcBriciis, Boeckl. Heads smaller than in the type, 

 very dense ; spikelets more subulate, reddish brown, Arkansas 

 (Dr. Pitcher) ; Indian Territory (Dr. Palmer, No. 348) ; Texas 

 (Wright) and Herb. Berland. Tex. Mex., Nos. 314, 1568 and 



1 574-) 



59. C. ToRREYI. [Mariscus cylindriacs, Ell. ; C. ovtilaris, 



var. cylindricus, Torrey ; C. cylindricus, Britton, 1. c, vii., p. 48, 

 Plate III., not of Chapman.) Long Island (Leggett) to Florida 

 (Curtiss, N. A. Plants, No. 3051), and westward to Texas 

 (Palmer, Flor. S. W. Texas, No. 2017.) 



60. C. retrorsus, Chapm. in Bot. Gazette, iii., p. 17 ; C. rct- 

 roversus, Chapm., Suppl., p. 659; M. alternifolius, Vahl.) 

 Robert's Key, Caximbas Bay, southern Florida (Chapman) ; 

 also in Mauritius. 



61. C. retrofractiis, Gray. Southern New Jersey to Flor- 

 ida (Curtiss, No. 3053), and Texas (E. Hall, Plantae Texanae, 

 No. 691.) 



62. C. flavomarisciis, Griseb., Flor. Brit. W. I., p. 567. 

 {Mariscus flavus, Vahl ; C. flavus, Boeckl.) Valley of the 

 lower Rio Grande (Buckley) ; Monterey, Cal. (?), vide Watson, 

 Bot. Cal., ii., p. 216; in ballast at Philadelphia and Camden 

 (Parker, Burk) ; also in Mexico, the West Indies and South 

 America. 



Var. PEDUNCULARIS, n. var. Rays of the umbel elongated, 

 with setaceous involucels. Chihuahua (Dr. E. Palmer, No. 49, 

 1885 ; Mandon, Plantae Andium Bolivensium, No. 1398.) 



63. C. cylindriciis, Chapm , not of Britton. Colier's Key, 

 Marco Pass, South Florida (Chapman.) 



64. C. uniflorus, Torr. and Hook. Texas (Drummond, 

 Wright, E. Hall, No. 686, Reverchon, Nealley.) 



Var. pumilus, Britton. Indian Territory (Dr. Palmer, No. 

 350) ; valley of the lower Rio Grande (Buckley.) 



65. C. Wrightii, n. sp. Culm slender, triangular, 12 to 15 

 inches high; leaves of the culm few, narrowly linear; root leaves 

 not seen ; involucre of one elongated leaf, and 2 to 4 shorter 

 ones ; umbel simple, of i to 3 short rays ; inflorescence of i to 



