3"/] FLORA OF BOULDER, COLORADO 229 



Plains about Boulder, 5100-6000 ft. (Daniels, 831). 

 Saskatchewan to Alberta; New Mexico to Arizona. 



1018. C. Cooperi A. Nels. Cooper's golden aster. 



Long's Peak near timberline, the type locality, (A. Nels). 

 Colorado. 



437. CHEYSOTHAMNTJS Nutt. Rabbit-brush. 



1019. C. Parryi (Gray) Greene [Bigelovia Parryi Gray]. 

 Parry's rabbit-brush. 



Subalpine valley at Eldora, 8700 ft. (Daniels, 866). 

 Wyoming to Color.-vdo. 



1020. C. graveolens (Nutt.) Greene [C. nauseosus graveo- 

 lens (Nutt.) Piper]. Heavy-scented rabbit-brush. 



Mesa south of the Chautauqua grounds, Boulder, (Rama- 

 ley). 



Nebraska to Montana; New Mexico to Utah. 



102 1. C. pulcherrimus A. Nels. Fairest rabbit-brush. 

 Alkali flat east of Boulder near Owen's lake, 5200-5300 ft. 



(Daniels, 663). 



Montana to Colorado. 

 i02ia. C. pulcherrimus fasciculatus A. Nels. Fasciculate 

 rabbit-brush. 



Boulder creek, the type locality (A. Nels.). 



1022. C. elegans Greene. Handsome rabbit-brush. 

 Subalpine valley at Eldora, 8700 ft. (Daniels, 867). 

 Colorado. 



438. SIDERANTHTIS Nutt. Star-flower. 



1023. S. annuus Rydb. Annual star-flower. 

 Arapahoe Road east of Boulder, 5300 ft. (Daniels, 726). 

 Nebraska and Colorado to Texas. 



1024. S. spinulosus (Pursh) Sweet [Aplopappus spinulosus 

 (Pursh) DC.]. Spinulose star-flower. 



Frequent on the plains, 5100-5700 ft. (Daniels, 473). 

 Minnesota to Saskatchewan and Montana; Texas to 

 Arizona. 



439. PYRROCOMA Nutt. 



1025. P. crocea (Gray) Greene {A. croceus Gray]. Yellow 



