350 CARDUACEAE. 



Plant acaulescent ; heads sessile among the rosulate leaves. 



Plant glabrate, cinereous only when young ; leaves oblanceolate or spatulate. 

 Bracts broadly lanceolate, tinged with red. 



Bracts obtuse ; ray-flowers with a very short pappus. 



8. T. Rothrockii. 



Bracts acute ; pappus of disk-and ray-flowers alike. g. T. Wilcoxiana. 

 Bracts narrowly lanceolate, mostly green. 10. T. intermedia. 



Plant permanently cinerous ; leaves linear or linear-oblanceolate. 



ii. T. exscapa. 



1. Townsendia grandiflora Nutt. On plains and hills from S. D. and Wyo. 

 to Ind. Terr, and Colo. Alt. 4000-11.000 ft. Morrison; Manitou ; South Table 

 Mountain ; Ft. Collins ; Larimer Co. ; Red Rock Canon ; Garden of the 

 Gods ; Spring Canon ; Boulder ; Horsetooth Gulch ; Pennock's mountain ranch ; 

 Soldier Canon. 



2. Townsendia eximia A-. Gray. On mountain sides from Colo, to Tex. and 

 Ariz. " Colorado." 



3. Townsendia Vreelandii Rydb. In mountain sides and in valleys of 

 southern Colo. Alt. 8000-10,000 ft. Veta Pass ; Veta Mountain ; West Span- 

 ish Peak. 



4. Townsendia Fendleri A. Gray. Gravelly hills in N. M. and Colo. 

 Roubadeaux Pass ; Salida ; Arkansas River, near Poncha Pass. 



5. Townsendia strigosa Nutt. On gravelly hills from Wyo. to N. M. and 

 Ariz. Alt. 7000-10,000 ft. Silver Plume ; Mancos ; Hotchkiss. 



6. Townsendia incana Nutt. Mountains and hills from Wyo. and Utah to 

 N. M. and Ariz. Alt. 4000-5000 ft. Grand Junction; Rifle; Palisades. 



7. Townsendia glabella A. Gray. (T. Bakeri Greene) On dry hillsides 

 of Colo. Alt. about 8500 ft. La Pagosa; Dix; Los Pinos (Bayfield). 



8. Townsendia Rothrockii A. Gray. On mountains of southern Colo. 

 Alt. up to 13,000 ft. South Park. 



9. Townsendia Wilcoxiana Wood. On dry plains and hills from Ind. Terr, 

 to Colo. San Louis Range. 



10. Townsendia intermedia Rydb. On dry plains and hills from Neb. and 

 Wyo. to Kans. and Ariz. Alt. about 5000 ft. Lake City; Ft. Collins; 

 South Park; Colorado City. 



11. Townsendia exscapa (Richardson) Porter. (T. scricea Hook.) On 

 dry plains from Sask. and Mont, to Tex. and N. M. Alt. 4000-8000 ft. 

 Uncompahgre Mountains, near Los Pinos ; Denver ; New Windsor ; Central 

 City ; butte five miles southwest of La Veta ; mesas near Colorado Springs ; 

 La Veta; Ft. Collins; Los Pinos (Bayfield); plains near Denver; Dixon 

 Canon ; hills near Arthur's Rock; Horsetooth Gulch. 



24. BRACHYACTIS Ledeb. 



Bracts oblong or oblong-linear, obtuse. i. B. frondosa. 



Bracts narrowly linear, acute. 2. B. angusta. 



1. Brachyactis frondosa (Nutt.) A. Gray. (Aster frondosus T. & G.) 

 Along streams and pools from Wyo. and Ida. to Colo, and Calif. Hotchkiss, 

 Delta Co. 



2. Brachyactis angusta (T. & G.) Britton. (Aster angustus T. & G.) In 

 wet saline soil from Ills., Sask. and Alb. to Mo., Colo, and Utah. Blue River, 

 above Kremmling; New Windsor; Hotchkiss. 



