Nelson : New Plants from Wyoming 



235 



peduncles and the different involucral bracts are equally character- 

 istic of R. amp/a. 



Whether all the Rocky Mountain forms belong here I am 

 unable to say, but I would include Baker's no. 699, Pagosa Springs, 

 Colo. ; 224, Jennie M. Archibald, Berwind, Colo. ; and all my 

 numbers as follows : Eagle Rock Canon, Aug., 1891 ; no. 1575, 

 Cotton Wood Canon, Aug. 5, 1895 ; no. 7709, Centennial, July 

 26, 1900. 



