E XXVIII NUMBER 6 
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MTANICAL GsAZETTE 
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DECEMBER 1899 
SOME ROCKY MOUNTAIN CHRYSOTHAMNI, 
AVEN NELSON, 
\FTER an experience of several years as a collector and as a 
tof this group both in the field and in the herbarium, I 
teached the conclusion that the genus Chrysothamnus, as 
Sin the Rocky mountains, is still to an unsuspected degree 
Own and unappreciated. 
he plants of the far west became known to the botanical 
orld at an earlier day than those of the interior west, and it 
Sto have been assumed that the species of the two regions 
Ktobe the same. As a result of this assumption we have 
Toducing a confusion in the herbaria that will be cleared 
difficulty. Dr. Greene’s* papers on this genus teprescnt 
attempt to do justice to the species of the range in ques- 
In this genus, as in many others, Nuttall’s knowledge 
d in the field has been discounted, but, like other attempts 
rdinate his Species, it has simply resulted in confusion. 
following notes it is hoped may be serviceable not only 
ent students, but to all who are interested in this charac- 
| others believed to represent species not heretofore col- 
Only such species are included in this paper as belong 
“43392-96; 107-115. 1895. 
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