242 UNIVERSITY OF MISSOURI STUDIES [39O 



and Ward (Rydberg). 



Montana to Nevada ; New Mexico to Arizona. 



454. RUDBECKIA L. Cone-flower. 



1 1 10. R. flava Moore. Yellow cone-flower. 



On the plains and foothills, 5100-8000 ft. (Daniels, 428). 

 North Dakota and Wyoming to Colorado. 



1 iii. R. laciniata L. Gray-headed cone-flower. 

 Golden glow. 



Common along streams, 5100-9500 ft. (Daniels, 561). 

 Quebec to Idaho; Florida to Arizona. 



455. RATIBIDA Raf. 



1 1 12. R. columnaris (Sims) D. Don [Lcpachys columnaris 

 (Sims) T. & G.]. Long-headed cone-flower. 



Abundant on the plains and mesas, 5100-6000 ft. (Daniels, 

 21). 



Saskatchewan to British Columbia; Tennessee to 

 Texas, Arizona and Mexico. 



1112a. R. columnaris pulcherrima (D C ) D. Don. Brown 



LONG-HEADED CONE-FLOWER. 



With the type but much less frequent, 5100-6000 ft. (Dan- 

 iels, 201). 



Range of the type. 



456. WYETHIA Nutt. 



1 1 13. W. amplexicaulis Nutt. Clasping-leaved wyethia. 

 Arapahoe Pass (Rydberg). 



Montana to British Columbia ; Colorado to Nevada. 



457. HELIANTHUS L. Sunflower. 



1 1 14. H. lenticularis Dougl. Common sunflower. 

 Plains, mesas and lower foothills, especially in denuded 



soils, 5100-7000 ft. (Daniels, 400). 



North Dakota to Idaho ; Texas to Arizona. 

 1 1 14a. H. lenticularis coronatus Cockerell. Red-streaked 

 sunflower. 



Found by Airs. T. D, A. Cockerell near her home in Boulder. 



