32 ROBINSON 
In 1906, R. E. Fries, Arkiv for Botanik, v. no. 13, 8-10, listed the 
Eupatoriums observed and collected by him on the Swedish expedi- 
tion of 1901-1902 to the Chaco Cordillera in northern Argentina and 
adjacent Bolivia. Of these, six are recorded as from Bolivia. 
In 1908, Hieronymus, |. ¢. xl. 371-388, treating the Compositae in 
an important paper by Urban, described nine species of Eupatorium’ 
from Bolivia, collected chiefly by K. Fiebrig in the extreme southern — 
part of the country. 
The only local paper touching this group for Bolivia was published 
at La Paz in 1910, by Dr. Otto Buchtien, Contrib. Fl. Boliv. pt. 1, 
189, and mentions in a list of his own plants six species of Eupatorium. 
In 1912, Dr. Janet Perkins in Engl. Bot. xlix. 222 writing of the 
collections chiefly of Bender and Pflanz mentions the Bolivian oc- 
currence of E. scopulorum Wedd. 
Last year the writer (Proc. Am. Acad. lv. 7-34) described six new 
species and varieties of Eupatorium frem Bolivia. 
The present treatment follows closely the plan adopted in the 
author’s recent papers on the Eupatoriums of Colombia, Venezuela, 
and Ecuador (Proc. Am. Acad. liv. 264-367) and of Peru (I. e. lv. 42- 
88). Therefore, in order to save space, species already treated in 
either of those papers are not here redescribed but merely cited with 
such bibliography as relates particularly to their occurrence in Bolivia. 
As in similar undertakings in the past the writer has been greatly 
aided by the privilege of borrowing or personally examining material 
in several important herbaria, notably those of the United States — 
National Museum, the Field Museum of Natural History in Chicago, 
the Missouri Botanical Garden, and particularly the New York 
Botanical Garden, the last mentioned being especially rich in Boli- 
vian plants through having the most complete sets of the extensive 
collections of Dr. H. H. Rusby and Mr. Miguel Bang, as well as 1n 
the possession of the herbarium of the late Dr. Otto Kuntze. 
To Dr. Rusby of the New York College of Pharmacy the writer 1s 
indebted for information which his personal familiarity with Bolivian 
geography and climatic conditions have enabled him to give In Te- 
gard to some of the more obscure plant-stations. Mr. Bayard Long 
has kindly furnished data concerning Bolivian specimens of Eupa- 
torium in the herbarium of the Philadelphia Academy of Natural 
Sciences. Mr. A. F. Hill, in charge of the herbarium of Yale Uni- 
versity, has been so good as to lend for comparative study the South 
American Eupatoriums of that establishment. Miss Mary A. Day, 
librarian of the Gray Herbarium, has given much aid in regard to 
the bibliography and in verification of citations. 
