146 RANUNCULACEAE. 



20. Ranunculus Bongardii Greene. (R. tenellns Lyallii A. Gray) Along 

 streams from Mont, to Alaska, Colo, and Ore. Near Wyoming line, North 

 Park. 



21. Ranunculus Earlei Greene. Along mountain streams in Colo. Alt. up 

 to 10,000 ft. Gore Pass; Leroux Creek; Hotchkiss, Delta Co.; Mancos; Bob 

 Creek. 



22. Ranunculus acriformis A. Gray. Along streams in Wyo. and northern 

 Colo. Alt. up to 9000 ft. Laramie River. 



23. Ranunculus pennsylvanicus L. f. On river banks from N. S. to Ida., 

 Ga. and Colo. Alamosa. 



24. Ranunculus Macounii Britton. Along streams and in wet places from 

 Ont. to Alb., Iowa and Colo. Alt. 4000-8000 ft. Ft. Collins; Bear River; 

 Steamboat Springs; Durango; bank of Michigan, Walden; New Windsor; 

 Gunnison; Mancos; Middle Park; La Veta; Kremmling; Cucharas Valley, 

 near La Veta; Routt Co. 



25. Ranunculus Purshii Richardson. (R. multifidus Coult, in part) In water 

 and on muddy flats from N. S. to Alaska, Ont., Colo, and Ore. Alt. 4000- 

 10,000 ft. Laramie River; above Beaver Creek; Ft. Collins; bank of Michi- 

 gan, at Walden ; Front Range, Larimer Co. ; Wahatoya Creek ; Parlin, Gun- 

 nison Co.; stream 12 miles below Grand Lake; Gunnison. 



26. Ranunculus intertextus Greene. (R. hyperboreus natans Coult.; not 

 Regel; R. natans A. Gray; not Meyer) In water in Wyo. and Colo. Alt. 

 8000-10,000 ft. Vicinity of Como ; Graymont ; Georgetown ; Breckenridge ; 

 Cassell's; South Park; Empire City. 



15. HALERPESTES Greene. 



i. Halerpestes Cymbalaria (Pursh) Greene. (Ranunculus Cymbalaria 

 Pursh; Oxygraphis Cymbalaria Prantl) In wet and especially alkaline soil 

 from Lab. to Alaska, N. J. and Calif. Alt. 4000-10,000 ft. Ft. Collins; 

 Pueblo; Gypsum; Trail Creek; Graymont; Colorado Springs; Montrose; 

 Grizzly Creek; Durango; Arboles; Sangre de Cristo Creek; Walsenburg; 

 Parlin ; Ouray ; Palsgrove Canon. 



16. CYRTORRHYNCHA Nutt. 



Sepals broadly rounded-ovate, not clawed ; petals usually wanting. 



i. C. neglecta. 

 -Sepals spatulate or obovate, clawed ; petals usually present. 



Leaf segments thick, mostly acute ; panicle corymbiform. 2. C. ranunculina. 



Leaf segments thin, broad; inflorescence not corymbiform. 3. C. rupestris, 



1. Cyrtorrhyncha neglecta Greene. In the mountains of Colo. Horsetooth 

 Mountain ; Golden City. 



2. Cyrtorrhyncha ranunculina Nutt. In the mountains of Wyo. and Colo. 

 Alt. 6000-8000 ft. Hills west of Soldier Canon ; Rist Canon ; foot-hills, Ft. 

 Collins ; Howe's Gulch, Larimer Co. ; Spring Canon ; Horsetooth Mountain ; 

 Dixon Canon; Green Mountain Falls; Ohio Creek. 



3. Cyrtorrhyncha rupestris Greene. In the mountains of Colorado. Black 

 Canon. 



