122 VVyoining Experiment Station. 



Aplopappus Nuttallii, T. & G. Fl. N. A. ii, 242 (1842). Eriocarpum 

 Grindelioides, Nutt. ' 



Collected on wet alkali flats. 



Laramie, October 1893. 

 Aplopappus Parryi, Gray, Am. Journ Sci. Ser. 2, xxxiii, 10. 



In partially shaded woods among the fallen trees. 



Centennial Hills, August 17, 189.5 (No. 169.5). 



Aplopappus pygmaeus, Gray, Am. Journ. Sci. .Ser. 2, xxxiii, 239. 



Sparingly found on the bleak, rocky summits of the Medicine 

 Bow Mountains, dwarf and somewhat caespitose. 

 La Plata Mines, August 23, 1895 (No. 1875). 



Aplopappus spinulosus, D C. Prodr. v, 347 (1836). Eriocarpum 

 spinitlosuni, (Pursh) Greene. 



Very abundant, in some localities becoming a weed. 

 Sheridan Experiment Farm, September 1895, J. F. Lewis ; Cold 

 ' Springs, July 14, 1894 (No. 456). 



Aplopappus uniflorus, T. & G. Fl. ii, 241. 



So far found only in the north-western part of the state. 

 Bacon Creek, August 15, 1894 (No. 911); Green River, August 

 26, 1894 (No. 1035). 

 *Bigelovia collinus, (Greene). Chrysothamnns collitiiis, Greene. 



For this specimen I am indebted to Prof. Greene. It is quite 

 distinct from all the other forms I have secured. 

 Rock Springs, August 9, 1895, Prof. E. L. Greene. 



Bigelovia Douglasii, Gray, Proc. Am. Acad, viii, 645 (1S73). 



The determination was made by Dr. Rose, but it should be 

 added that the specimens are somewhat immature, and, as stated 

 by him, not in condition to determine with certainty. 

 Laramie, 1893. 

 Bigelovia Douglasii lanceolata, Gray, Syn. Fl. 140 (1886). 



I judge the specimens before me to be nearly typical ; they 

 come from within the type locality as well. 



Union Pass, August 14, 1894 (No. 889); also from Bacon Creek. 



*The nomenclature of this genus is in such a state of contusion, that for the present I adopt 

 that which allows of the quickest and easiest disposition of my material. My library facilities 

 are too meager for me to presume to pass upon the relative merits of Dr. Gray's Bigelovia; Dr. 

 Britton's Chondrophora, and Prof. Greene's Chrysothamnus. 



