372 CARDUACEAE. 



1. Rudbeckia flava Moore. (R. hirta A. Gray, in part; not L.) On hill- 

 sides from N. D. and Wyo. to Colo. Alt. 5000-10,000 ft. Pike's Peak; Gun- 

 nison; Idaho Springs; South Park; Ruxton Dell; Engelmann Canon; Sangre 

 de Cristo Creek ; North Cheyenne Canon ; mountains, Larimer Co. ; George- 

 town; Parlin; Baxter's ranch; Bosworth's ranch; Stove Prairie; Moon's 

 ranch; Ute; Pingree Hill; Poudre River; Laramie River; Rist Canon. 



2. Rudbeckia laciniata L. In wet places from Que. and Ida. to Fla. and 

 Ariz. Alt. 4000-9500 ft. Durango; Williams' Canon; mountains, Larimer 

 Co.; Pagosa Springs; along Uncompahgre River, near Ouray; Ouray; Par- 

 lin, Gunnison Co.; Boulder; Ft. Collins; Big Creek Gulch; Bosworth's ranch, 

 Stove Prairie; Elk Canon; Long Gulch. 



3. Rudbeckia ampla A. Nels. On river banks in Wyo. and Colo. Baxter's 

 ranch; Poudre River flats; Ft. Collins. 



4. Rudbeckia montana A. Gray. In the mountains of Colo. Wolcott, 

 Eagle Co. ; Gunnison Co. ; Elk Mountains. 



47. RATIBIDA Raf. CONE-FLOWER. 



Disk in fruit oblong, about i cm. long; pappus of i or 2 awn-like teeth without 



intermediate squamellae. i. R. Tagetes. 



Disk in fruit cylindraceous, 2-4 cm. long; pappus with a series of squamellae. 



2. R. colwnnaris. 



1. Ratibida Tagetes (James) Barnhart. (Lepachys Tagetes A. Gray) On 

 plains from Kans. and Colo, to Tex. and Ariz. ; also in Mex. Alt. 4000- 

 7500 ft. Canon City; lola; Cheyenne Wells. 



2. Ratibida columnaris (Sims) D. Don. (Lepachys columnaris T. & G.) 

 On plains from Sask. and B. C. to Tenn., Tex. and Ariz. ; also in Mex. Alt. 

 4000-6000 ft. Ute Pass, near Pike's Peak; Ft. Collins; Denver; Piedra; 

 New Windsor, Weld Co. ; Boulder ; Horsetooth Gulch. 



Ratibida columnaris pulcherrima (DC.) D. Don. Rays at least partly 

 purple. Ft. Collins. 



48. BALSAMORRHIZA Hook. BALSAM-ROOT. 



1. Balsamorrhiza sagittata (Pursh) Nutt. On hillsides from Alb. and B. C. 

 to Colo, and Calif. Alt. 7000-8000 ft. Cerro Summit; Cimarron. 



49. WYETHIA Nutt. 



Involucral bracts nearly equal, in 2-3 series ; stem not white. 



Plant glabrous. i. W. amplexicaulis. 



Plant densely pubescent. 2. W, arizonica. 



Involucral bracts unequal, the outer much shorter in 5-6 series ; stem white. 



3. W. scabra. 



i. Wyethia amplexicaulis Nutt. In mountain valleys from Mont, and B. C. 

 to Colo, and Nev. Alt. about 9000 ft Rogers; divide road to Steamboat 

 Springs; Honnold; Continental Divide, Routt Co.; Arapahoe Pass; Camp 

 Creek; Spicer. 



2. Wyethia arizonica A. Gray. Near mountain streams from Colo, and 

 Utah to Ariz. Alt. 7000-8000 ft. Mancos; Cerro Summit; Rifle, Garfield 

 Co.; Los Pinos (Bayfield) ; Chicken Creek, west of Mt. Hesperus; Dolores; 



Gunnison Co. 



