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. lapathifolium 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. 

 1166^. S. Columbianus Greene. Columbian groundsel. 



Middle Boulder Canon 9000 ft. (Coulter in Wabash College 

 Plerb.). 



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

 & Coulter. 



Saskatchewan to Alaska; Minnesota to Colorado. 



1167. S. perplexus A. Nels. Perplexing groundsel. 

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



too old, the basal leaves gone, perhaps 6'. dispar A. Nels. 



