270 University of California Publications in Botany. [VOL. 3 



rious-margined equal bracts and an outer series of much shorter 

 loose calyculate ones. Receptacle bearing capillary bristles among 

 the flowers. Achenes 5-ribbed, narrowed above to a short beak 

 which terminates in a shallow denticulate crown. Pappus co- 

 pious, white, the bristles united at base and falling away in a 

 ring. 



Flowers yellow 1. C. Parryi. 



Flowers white, turning purplish: var. California of 2. C. Wrightii. 



1. C. Parryi Gray, Bot. Mex. Bound. 106 (1859). 



Plant from a few cm. to 3 dm. or more high : leaves linear 

 and entire or pinnately parted into short linear lobes : glands of 

 the inflorescence black : involucre 10 to 15 mm. high : ligules 

 bright yellow, 10 to 15 mm. long: achenes 6 mm. long including 

 the slender beak, ending in a small apical cup, the ribs acute : 

 pappus somewhat longer than the achene. 



In the Desert Area from San Diego Co. to Utah: Jacumba. 

 Cleveland, no 905 ; Palomar Mt., in the southern part of River- 

 side Co., Jepson and Hall; near Palm Canon, Colorado Desert. 

 Hall, no. 1857; north slope Cajon Pass and Ord Mts., Mohave 

 Desert, Hall, nos. 6214, 6794; Morongo, Parish, no. 1214; Piute 

 Creek, Mohave Desert, Wilson; Argus Mts., Coville & Funston. 

 no. 731; Bishop Creek, Inyo Co., Hall & Chandler, no. 7239; 

 Arizona, Wilson, Pringle, Tourney. The type locality given for 

 this species, namely, "mountains east of Monterey, California," 

 is certainly erroneous. 



2. C. Wrightii Californica Brandegee, Zoe v. 155 (1903). 

 Habit, foliage, involucres, etc., as in C. Parryi : glands of the 



inflorescence pale : ligules white, the outer with pink-brown dots 

 or streaks on back : achenes 6 mm. long, stout and thick, acutely 

 ribbed, the ribs rugulose and the beak short, ending in a rather 

 conspicuous apical cup. 



In sand near San Felipe, western borders of the Colorado 

 Desert (with C. Parryi), Purpus; common on Chuckawalla Bench 

 and in McCoy Wash, Colorado Desert, Hall, nos. 5872, 5966 

 (often 4 dm. high, growing among shrubs) ; Needles, Mohave 

 Desert, Miss Warner. 



