39 Z l FLORA OF BOULDER, COLORADO 243 



1115. H. petiolaris Nutt. PETIOLED SUNFLOWER. 

 Common in waste places and denuded soils throughout ex- 

 cept in the alpine region, 5100-9500 ft. (Daniels, 67). Also 

 from Eldora to Baltimore (Rydberg). 



MINNESOTA and SASKATCHEWAN to OREGON ; TEXAS to CAL- 

 IFORNIA. 



11153. H. petiolaris phenax Cockerell. 

 Boulder, the type locality (Cockerell). 



1116. H. subrhomboideus Rydb. SUBRHOMBOID SUNFLOWER. 

 Locally frequent on the mesas fronting the Flat-irons, 5700- 



6000 ft. (Daniels, 656). 



MANITOBA to MONTANA; NEBRASKA to COLORADO. 



1117. H. pumilus Nutt. DWARF SUNFLOWER. 



Abundant on the plains, mesas, and foothills, 5100-7500 ft. 

 (Daniels, 59). 

 WYOMING and COLORADO. 



1118. H. grosse-serratus Martens. COARSELY TOOTHED SUN- 

 FLOWER. 



Lowlands and stream-flats in the plains, 5100-5400 ft. (Dan- 

 iels, 670). 



NEW YORK to WYOMING; PENNSYLVANIA to TEXAS and 

 COLORADO. 



1119. H. fascicularia Greene [H. giganteus Utahensis D. C. 

 Eaton; H. Utahensis A. Nelson]. UTAH SUNFLOWER. 



Boulder (Rydberg). 



ASSINIBOIA to ALBERTA ; COLORADO to ARIZONA. 



458. HELIANTHELLA T. & G. 



1 1 20. H. quinquenervis Gray. FIVE-RIBBED FALSE SUNFLOWER. 

 In canons and on rich mountain slopes at Eldora and along 



the Arapahoe Trail, 8600-10000 ft. (Daniels, 843). Also El- 

 dora to Baltimore (Rydberg). 



SOUTH DAKOTA to IDAHO and COLORADO. 



459. VERBESINA L. CROWNBEARD. 



1121. V. exauriculata (Rob. & Greenm.) Cockerell [Verbesina 



