114 UNIVERSITY OF MISSOURI STUDIES [262 



147. CLAYTONIA L. SPRING BEAUTY. 



386. C. rosea Rydb. ROSY SPRING BEAUTY. 

 Common at Boulder (Cockerell). 



SASKATCHEWAN to BRITISH COLUMBIA; COLORADO to CALI- 

 FORNIA. 



387. C. megarrhiza Parry. LARGE-ROOTED SPRING BEAUTY. 

 Arapahoe Peak, towards summit, 12000-13500 ft. (Daniels, 



889, collected by Mrs. T. D. A. Cockerell). 

 MONTANA and COLORADO to UTAH. 



148. CRUNOCALLIS Rydb. WATER SPRING BEAUTY. 



388. C. Chamissoi (Ledeb.) Cockerell. Nov. comb. [Claytonia 

 Chamissonis Esch.]. CHAMISSO'S WATER SPRING BEAUTY. 



Along ditches in the plains, and in deep canons in the foot- 

 hills and mountains ; along streams at Ward and Bloomerville ; 

 in subalpine bogs at Eldora; and in wet tundras on Arapahoe 

 Peak, 5100-11000 ft. (Daniels, 239). Arapahoe Pass (Ryd- 

 berg). 



MINNESOTA to BRITISH COLUMBIA; NEW MEXICO to CALI- 

 FORNIA. 



149. OREOBROMA Howell. BITTER ROOT. 



389. 0. pygmaea (Gray) Ho'well. [Calandrinia pygmaea 

 Gray; Lewisia pygmaea (Gray) Robinson]. PYGMY BIT- 

 TER ROOT. 



Arapahoe Peak, 12000 ft. (Rydberg). Redrock lake, 10100 

 ft. (Ramaley & Robbins). 

 MONTANA and COLORADO to CALIFORNIA. 



150. PORTULACA L. PURSLANE. PUSSLEY. 



390. P. oleracea L. COMMON PURSLANE. 



Campus of the University of Colorado at Boulder (Cock- 

 erell). 



TROPICAL AMERICA, now cosmopolitan. 



391. P. retusa Engelm. RETUSE-LEAVED PURSLANE. 



Along the railroad in Sunset Canon, 5700-7700 ft. (Daniels, 

 722). 



ARKANSAS to NEVADA; TEXAS to NEW MEXICO. 



