RANUNCULACEAE. 141 



9. CLEMATIS L. Virgin's Bower. 



i. Clematis ligusticifolia Nutt. Among bushes and in canons from N. D. 

 to B. C, Mo. and Calif. — Alt. 4000-8000 ft. — Log Canon ; Poudre River, near 

 Ft. Collins ; Rist Cafion ; Redstone ; Narrows ; Deer Run ; Ft. Collins ; near 

 Ouray ; Manitou ; Cucharas Valley, near La Veta ; Piedra ; Arkansas Valley ; 

 Salida ; Durango ; plains, Colorado Springs. 



10. VIORNA Reichenb. Leather-flower, Vase-vine. 



Sepals not at all or very slightly dilated above. 



Divisions of the leaves ovate or ovate-lanceolate, 2-5 cm. long. 1. V. Scottii. 



Divisions of the leaves linear to lanceolate, 1-2 cm. long. 2. V. Bakeri. 

 Sepals conspicuously dilated at the apex. 



Sepals acute or short-acuminate ; plant in age glabrate ; divisions of the leaves 



lanceolate. 3. V. Jonesii. 



Sepals obtuse or merely acutish ; plant permanently villous ; divisions of the 



leaves linear. 4. V. eriophora, 



I. Viorna Scottii (Porter) Rydb. {Clemdiis Scottii Porter; C. Douglasii 

 Scottii Coulter) In open woods and on hillsides from S. D. to Wyo. and 

 N. M. — Alt. 4000-9000 ft. — Vicinity of Dillon Cafion ; Trinidad ; La Veta ; 

 Veta Pass; Poverty Ridge, near Cimarron; Grizzly Creek; La Plata River 

 Valley, near Hesperus Post Ofifice; Caiion City. 



■^. Viorna Bakeri (Greene) Rydb. (Clematis Bakeri Greene) In moun- 

 tains of Colo. — Alt. about 7000 ft. — Los Pinos ; Camp Creek, Larimer Co. 



3. Viorna Jonesii (Kuntze) Rydb. (Clematis Douglasii Jonesii Kuntze) 

 On hillsides and in cafions from Colo, to Nev. — Alt, 5000-9000 ft. — Howe's 

 Gulch, near Ft. Collins ; vicinity of Ouray ; Dolores ; Cimarron ; Dixon Cafion ; 

 foot-hills near Boulder. 



4. Viorna eriophora Rydb., (Clematis eriophora Rydb,) In the foot-hills 

 of Colo., Utah and Wyo. — Alt, 4000-7000 ft. — Foot-hills, Larimer Co. ; gulch 

 west of Dixon Cafion; Howe's Gulch; Rist Cafion; Horsetooth Gulch; Ft. 

 Collins; Clear Creek; mesas near Colorado Springs; mountains near Golden 

 City; Pagosa. 



II. ATRAGENE L. Bell-rue, Purple Virgin's Bower. 



Leaves merely ternate. 



Staminodia usually decidedly spatulate ; leaflets toothed or cleft ; teeth and apex 

 rounded. 3- ^- diversiloba. 



Staminodia linear or none; leaflets entire or crenate above the middle, long- 

 acuminate. I- A. occidentalis. 

 Leaves twice or thrice ternate ; staminodia linear or lacking. 



Secondary leaflets merely toothed or cleft. 2. A. pseudalpina. 



Secondary leaflets divided to near the base. 4- A. tenuiloba. 



i. Atragene occidentalis Hornem. (A. Columbiana Nutt.; Clematis verti- 

 cillaris Coult., in part) In mountain woods from Mont, to B. C, Colo, and 

 Utah.— Alt. S000-7000 ft.— Foot-hills, Larimer Co. ; Howe's Gulch ; gulch east 

 of Stove Prairie; Rist Caiion; Baxter's ranch; Ft. Collins; Four-Mile Hill, 

 Routt Co. ; Empire ; Camp Creek, Larimer Go. 



is. Atragene pseudalpina (Kuntze) Rydb. (Clematis alpina occidentalis 

 A. Gray; not A. occidentalis Hornem.) On hillsides, among bushes and in 



