299 



tains (type), and 918^ from Spanish Basin, 1896; Frank 

 Tweedy, no. 340, Park county, 1887. 

 Nevada: S. Watson, no. 667, 1868. 



Senecio crocatus. 



S. aureus var. croceus Gray, Proc. Acad. Phila. 1863: 68. 1863, 



Not 5. croceus DC. 



This is well distinct from both the preceding and from .S. aureus, 

 differing in its smaller oval or obovate, coarsely and bluntly den- 

 tate, somewhat fleshy basal leaves. It represents 5. obovatus of 

 the East. It was collected in Montana by Mr. Flodman in the 

 Little Belt Mountains, near the pass, no. 911. 



Crepis runcinata alpicola. 



Stem scapose, about i dm. high, generally only i -flowered; 

 leaves entire, or with a few small teeth, and with very short pet- 

 if^les. 



In habit it is very unlike the typical C. nincinata, but I have 

 been unable to find any essential characters in the heads, involu- 

 cre, pappus or achenes, by which to separate it as a species. The 

 short I -flowered stem, smaller and more entire leaves may be due 

 to the high altitude, 7000 feet, at which it grew. 



Type: Flodman, no 931, August 24, 1896, from Yogo Baldy, 

 Little Belt Mountains. 



Antennaria dioica and its North American Allies. 



By p. a. Rydberg. 



In 1892 when I began to determine my Black Hills collection, 

 I felt that there must be something wrong in the genus Antennaria, 

 especially in the group of which A. dioica is the representative 

 species. My studies then, my field work in 1895 and 1896, and 

 Mr. Flodman's collection have made it possible I think to remove at 

 least a part of the difficulty. What have been named in our her- 

 baria A. dioica and A. alpina constitute not less than six distinct 

 species. I suspected that A. plantaginifolia contains more than one 

 species, but have not been able to satisfactorily solve the problem. 

 This seems to have been done by Prof. E. L. Greene in a recent 



