124 UNIVERSITY OF MISSOURI STUDIES [272 



440. R. abortivus L. Kidney-leaved crowfoot. 

 Common in low grounds, 5100-9000 (streams at Bloomer- 



ville) ft. (Daniels, 322). 



Labrador to Saskatchewan ; Florida to Colorado. 



441. R. micranthus Nutt. Small-flowered crowfoot. 

 In Bear Canon, 6000-7000 ft. (Daniels, 828). 

 Massachusetts to Saskatchewan ; Florida to Colorado. 



442. R. sceleratus eremogenes (Greene) Cockerell. Nov. comb. 

 [R. eremogenes Greene]. Western swamp crowfoot. 



Along ditches and in swales about Boulder and Marshall ; 

 along Four-mile creek in Sunset Canon, 5100-8000 ft. (Dan- 

 iels, 429). 



Saskatchewan to Alberta; New Mexico to California. 



443. R. Macounii Britton. Macoun's buttercup. 



About irrigation ditches in the plains, 5100-5600 ft. (Dan- 

 iels, 236). 



Ontario to Alberta : Iowa to Colorado. 



174. HALERPESTES Greene. 



444. H. Cymbalaria (Pursh) Greene [Ranunculus Cymbalaria 

 Pursh ; Oxygraphis Cymbalaria (Pursh) Prantl ; Cyrtor- 

 rhyncha Cymbalaria (Pursh) Britton]. Seaside crow- 

 foot. 



Around ponds and irrigation ditches about Boulder and Mar- 

 shall on the plains, 5100-5700 ft. (Daniels, 255). Also at 

 Ward (Cockerell). Valmont (Coulter in Wabash College 

 Herb.). 



North America: South America: Asia. 



175. CYRTORRHYNCHA Nutt. 



445. C. ranunculina Nutt. [Ranunculus Nuttallii Gray]. 

 Nuttall's buttercup. 



Rare on the north slope of Green Mt., 6500-7000 ft. (Dan- 

 iels, 369). Near Long's Peak (Porter & Coulter; also Coulter 

 in Wabash College Herb.). 



Wyoming to Colorado. 



