CARDUACEAE. 381 



5. Hymenoxys helenioides (Rydb.) Cockerell. (Picradenia helenioides 

 Rydb.) In river valleys of southern Colo. Alt. 8000-9000 ft. Sangre de 

 Cristo Creek. 



6. Hymenoxys multiflora (Buckley) Rydb. (Phileozera multifiora Buck- 

 ley ; Picradenia multiflora Greene) Dry plains from Kans. and Colo, to Tex. 

 and Ariz.; also northern Mex. In Colorado represented by var. Osterhoutii 

 (Cockerell) Rydb. (H. chrysanthemoides Osterhoutii Cockerell) . Apishapa 

 Creek, Otero Co. 



71. FLAVERIA Juss. 



i. Flaveria angustifolia (Cav.) Pers. In alkaline soil from Colo, to Tex. 



and N. M. ; also Mex. Alt. about 4600 ft. Grand Junction. 



72. DUGALDIA Cass. 



i. Dugaldia Hoopesii (A. Gray) Rydb. (Helenium Hoopesii A. Gray) In 

 mountain valleys from Wyo. to N. M. and Calif. Alt. 7000-12,000 ft 

 Mountains above Ouray; Crested Butte; Leroux Creek; Red Mountain; 

 Breckenridge ; Veta Pass; Westcliffe; Ironton Park, nine miles south of 

 Ouray; Sangre de Cristo Creek; Grayback mining camps; Ironton, San Juan 

 Co. ; along carriage road to Pike's Peak ; near Pagosa Peak ; Trappers' Lake ; 

 Cripple Creek; La Plata Canon; Gore Pass; Mancos; Leroux Creek delta; 

 Harm's Peak; Lake City. 



73. HELENIUM L. SNEEZE-WEED. 



i. Helenium montanum Nutt. (H. autumnale A. Gray, in part; not L.) 

 In meadows from Minn., Sask. and Wash, to Miss, and Colo. Kremmling. 



74. GAILLARDIA Foug. 



Lobes of the disk-corollas acute. i. G. aristata. 



Lobes of the disk-corollas short and broad, obtuse. 2. G. pinnatifida. 



1. Gaillardia aristata Pursh. On hills and plains from Sask. and B. C. to 

 Colo, and Ore. Alt. 4000-8000 ft. Glenwood Springs; Larimer Co.; Horse- 

 tooth Gulch; Rist Canon; Westcliffe; Veta Pass; Idaho Springs; foot-hills 

 west of Ft. Collins ; Empire ; Boulder ; Soldier Canon ; Monument ; hill north- 

 west of Soldier Canon; Spring Canon; Redstone; forks of the Poudre and 

 Big South ; Dixon Canon ; Stove Prairie Hill ; Narrows ; Table Rock. 



2. Gaillardia pinnatifida Torn On dry plains from Colo, to Tex. and Ariz. 

 Alt. 4000-6000 ft. Deer Run; Durango; Walsenburg; Grand Junction. 



75. BOEBERA Willd. FETID MARIGOLD. 



i. Boebera papposa (Vent.) Rydb. (Dysodia chrysanthemoides Lag.) On 

 prairies, river valleys, roadsides and waste places from Ohio and Mont to 

 Ark. and Ariz.; also Mex. Alt. 4000-7000 ft. Cucharas Valley, near La 

 Veta; Ft. Collins; Minnehaha; Boulder; Lyons; Colorado Springs; North 

 Cheyenne Canon. 



76. LOWELLIA A. Gray. 



i. Lowellia aurea A. Gray. (Hymenatherum aureum A. Gray) On plains 

 from Colo, to Texas. Rocky Ford, Otero Co.; Canon City; Pueblo; Huer- 

 fano; Colorado Springs; Denver. 



