250 UNIVERSITY OF MISSOURI STUDIES [398 



dora, and ascending to timberline, Arapahoe Peak, 8600-1 looo 

 ft. (Daniels, 635). Also between Sunshine and Ward (Ryd- 

 berg). 



Alberta to Alaska; Colorado to California. 



1 161. S. admirabilis Greene. Admirable groundsel. 

 Subalpine bogs at Eldora, 8600 ft. (Daniels, 650). 

 Wyoming to Colorado. 



1 162. S. lapathifoliuin Greene. Lapathus-leaved ground- 

 sel. 



High slope near snow above Bloomerville, 9000-10000 ft. 

 (Daniels, 315). 

 Colorado. 



1 163. S. crassulus Gray. Thickish groundsel. 



Above timberline, Arapahoe Peak, 10500-11000 ft. (Daniels, 

 945). Also at Ward; and Eldora to Baltimore (Rydberg). 

 Montana to Idaho ; Colorado to Utah. 



1 164. S. rapifolius Nutt. Turnip-leaved groundsel. 

 Boulder Canon near Falls, 7000-8000 ft. (Daniels, 543). 

 South Dakota to Idaho and Colorado. 



1 165. S. hydrophilus Nutt. Water-loving groundsel. 

 Alpine valley near snow above Bloomerville, 9000-10000 ft. 



(Daniels, 319). 

 Montana to Colorado and Nevada. 



1 166. S. Hookeri Gray. Hooker's groundsel. 

 Eldora to Baltimore (Rydberg). 



Alberta and British Columbia to Colorado. 

 11663/^. S. Columbianus Greene. Columbian groundsel. 



Middle Boulder Canon 9000 ft. (Coulter in Wabash College 

 Herb.). 



This is, in part at least, the 5". lugens Parryi Eaton of Porter 

 & Coulter. 



Saskatchewan to Alaska; Minnesota to Colorado. 



1 167. S. perplexus A. Nels. Perplexing groundsel. 

 North slope of Flagstafif Hill, 6000 ft. (Daniels, 148). Plant 



too old, the basal leaves gone, perhaps 5". dispar A. Nels. 



