CARDUACEAE. 397 



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



45. Senecio cymbalarioides Nutt. (S. aureus horealis 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. Aavoviretis 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 Cafion; 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. Graj-. On the peaks of Colo. — Alt. 8000- 

 10,000 ft. — Empire; Cameron Pass. 



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



