CONTRIBUTIONS TO WESTERN BOTANY. 687 



ened towards the seed; oil tubes 3-4 in the intervals and 

 about 6 on the commissure ; involucels divided to the base 

 and pinnate -nerved; root abruptly tuberous -enlarged. 

 The types of this variety are Woolson's specimen from 

 Dallas, Texas; Reverchon's, same locality, with nar- 

 rower wings. 



I refer here with much hesitation a specimen from 

 Fort Belknap, collected by Sutton Hayes, for this may 

 belong to Utahensis var, Eastwood<^, described above. 



C y mooter Its pur pitrascens (Gray, Bot. Ives, 15) Jones. 



No, 5002. March 30, 1894, ^^ ^^ iooX. of the grade 

 above Bellevue, Utah, in gravel, 3700° alt. 



No. 5140C. May i, 1894, Washington, Utah, in alka- 

 line clay, on flat, 3000° alt.. 



No. 5196m. May 8, 1894, Le Verkin, Utah, in gravel, 

 3700° alt. 



To this I also refer a specimen from the Uinkaret 

 Mountains, South Utah, collected by Mrs. Thompson in 

 1892; Rusby's from Mangus Spring, New Mexico ; Lem- 

 mon's from Peach Spring, Arizona; Bishop's from south 

 Utah; McDougal's from the San Francisco Mountains, 

 Arizona; Dr. Mearns' from the Carrigallilo Mountains, 

 New Mexico, collected April 17; and the central speci- 

 men on the sheet marked C . niontaniis from the Mexican 

 Boundary Survey; all these being in the National Her- 

 barium. 



This species is very marked by its long peduncles, at 

 least longer than the leaves; by its purple and greenish, 

 not hyaline (except on the very margin), many nerved, 

 barely lobed, large, rounded involucels, which in flower 

 are cup-like and inclose the brilliant-purple flowers, simu- 

 lating one of the CompositcB ; involucre similar and either 

 of ovate and acute or wider and obtuse lobes which are 

 either very large or sometimes reduced even to a rudi- 



