1892.] NATURAL SCIENCES OF PHILADELPHIA. 363 



C. fontinalis. Cnicus fontinalis Greene, Bull. Calif. Acad, ii, 151. 



Cr^'Stal Springs, San Mateo County, California. 



C. amplifolius. Cnicus amplifolius Greene, Pittonia, i, 70. 



Coast Kauge, California. 



C. Grahami. Cirsium Grahami Gray, PI. Wright, ii, 102, and Proc. Am. Acad, s, 

 42, under Cnicus. 



Arizona. 



C. ochrocentrus. Cirsium ochrocentrum Gray, PI. Fendl. 110, and Proc. Am. 

 Acad, xix, 57, under Cnicus. 



Southern California to western Texas, and Colorado. 



C. Breweri. Cnicus Breweri Gray, Proc. Am. Acad, x, 43. 



California and Oregon. 



C. raphilepis. Cnicus raphilepis Hemsl., Biol. Centr. Am. Bot. ii, 252. 



Southern Mexico. 



C. acantholepis. Cnicus acantholepis Hemsl., 1. c, 251. 



Mexico. 



C. Mexicanus. Cirsium Mexicanum D. C, Prodr. vi, 6.36. Cnicus Mexicanus, 

 Hemsl., 1. c. 



Southern Mexico. 

 C. heterolepis. 



Stout and tall (8 feet high), parted above into long pedunculate 

 and monocephalous branches ; leaves a foot long, sessile or short- 

 petioled, pinnately parted into lanceolate spinose segments, strigose- 

 pubescent above, white-tomentose beneath ; heads 2 J inches high; 

 bracts of involucre very unequal, loosely imbricate, the exterior 

 and middle ones lanceolate and lanceolate-acuminate, pectinate-spin- 

 ulose and with straight spinose tip; the inner 2 inches long, linear, 

 thin and almost scarious throughout; segments of the corolla about 

 equalling the throat ; all the pappus-bristles plumose. 



State of Jalisco, Mexico, 1889, C. G. Pringle, n. 2,435 ; distrib- 

 uted as a Cnicus, with the specific name here continued ; but I can- 

 not find that any description was published. 



C. linearifolius. Cnicus /ineari/olius S. Wats., Proc. Am. Acad, xxvi, 143. 



Southern Mexico. 



C. velatus. Cnicus velatus S. Wats., 1. c. 



Southern j\Iexico. 



