CARDUACEAE. 397 



44. Senecio oodes Rydb. Mountains of Colo. Mt. Harvard ; Robinson. 



45. Senecio cymbalarioides Nutt. (S. aureus borealis T. & G.) In mead- 

 ows from the Mackenzie to Colo, and Utah. Alt. 7000-13,000 ft. West 

 Spanish Peak; Marshall Pass; Rabbit-Ear Range; Mt. Harvard; Redcliffe; 

 peak near White House; Hematite; Mancos. 



46. Senecio subcuneatus Rydb. In meadows of Colo, and Wyo. Alt. 7000- 

 8500 ft. Arboles ; Grizzly Creek ; Hamor's Lake ; Mancos ; Lake City. 



47. Senecio pyrrochrous Greene. In wet meadows of Wyo. and Colo. 

 Alt. 8000-9500 ft. Mt. Harvard ; Hamor's Lake, north of Durango ; Sar- 

 gents; Marshall Pass; Medicine Bow Range; Sheephorn Divide, Middle Park; 

 Jack's Cabin ; Rico ; Silverton. 



48. Senecio Tracyi Rydb. Mountains of Colo. Alt. 10,500 ft. Bob Creek, 

 west of Mt. Hesperus. 



49. Senecio pseudaureus Rydb. In wet meadows from the Mackenzie and 

 B. C. to N. M. and Nev. Alt. 7000-13,000 ft. Mancos ; Long's Peak ; Grizzly 

 Creek. 



50. Senecio Hartianus Heller. In wet meadows from Colo, to N. M. and 

 Ariz. Alt. 7000-9000 ft. Minturn, Eagle Co. ; Cucharas River, below La 

 Veta ; headwaters of Sangre de Cristo Creek; Veta Pass; along the Conejos 

 River, north of Antonito. 



51. Senecio mutabilis Greene. (S, aurellus Rydb.) In valleys of Colo. 

 Alt. 5000-9000 ft. Hotchkiss ; Cimarron ; Lake John, North Park ; La Plata 

 Canon; Sapinero; Cucharas River, below La Veta; Arboles; Mancos; Los 

 Pinos; Rico; Hotchkiss; Florence; Colorado Springs. 



52. Senecio nephrophyllus Rydb. In wet meadows from Mont, to Colo. 

 Near Lake John, North Park. 



53. Senecio flavulus Greene. (S. flavovirens Rydb.) In wet meadows from 

 Mont, and Ida. to Colo. Alt. 5000-7000 ft. Gypsum Creek Canon ; Walton 

 Creek, Routt Co. ; Dolores ; Laramie Plains ; La Veta ; New Windsor ; Arboles ; 

 Sapinero; Black Cafion; Brant's Soda Spring; Walton Creek; Horsetooth 

 Gulch ; Walden. 



54. Senecio fedifolius Rydb. Wet places in alpine regions of Colo. South 

 Park. 



55. Senecio petrocallis Greene. (S. petraeus Klatt) On alpine peaks of 

 Colo. Alt. 11,000-13,000 ft. Near Pagosa Peak; mountains above Ouray; 

 Gray's Peak ; Lake City. 



56. Senecio cognatus Greene. On high mountains of Colo. Piedra. 



57. Senecio pentodontus Greene. On alpine mountains of Wyo. and Colo. 

 Alt. 10,000-12,000 ft. Upper La Plata Canon; West Spanish Peak; Car- 

 son ; Lake City ; Chicken Creek, west of Mt. Hesperus. 



58. Senecio Porteri Greene. (S. renifolius Porter) Alpine regions of Colo. 

 Alt. 13,000 ft. White House Mountain. 



59. Senecio turbinatus Rydb. Mountains of Colo. Lake City. 



60. Senecio perennans A. Nels. On the higher mountains of Wyo. and 

 Colo, Alt. 8000-10,500 ft. Grayback mining camps ; Hahn's Peak ; Red- 

 cliffe; Silver Plume. 



61. Senecio werneriaefolius A. Gray. On the peaks of Colo. Alt. Sooo- 

 10,000 ft. Empire; Cameron Pass. 



62. Senecio MacDougalii Heller. (S. crcmoplrilus A. Gray, mainly; not 



