TROPICAL AMERICAN EUPATORIEAE 33 
The abbreviations here employed to indicate the different her- 
baria are identical with those used and duly explained in the former 
papers already cited. 
The maximum number of Bolivian Eupatoriums enumerated in 
any previous paper appears to have been twenty-seven. It will be 
seen, however, that by bringing together all available specimens 
and data it has been possible to include in the present revision sixty- 
eight species (not to mention several varieties and named forms), 
although it has been necessary to transfer several to neighboring 
genera, such as Ophryosporus, etc. Furthermore, there is reason to 
suppose that of the Eupatoriums indigenous in Bolivia a great part 
~ are still to be discovered. In this connection it may be noted with 
interest that from Peru, the adjacent country to the northwest, we 
now know seventy-nine! species of this genus and from Brazil, to 
the east, upward of two hundred. Bolivia, intermediate in position 
and with equal diversity of habitat, is therefore pretty sure to possess 
a much larger representation of the group than has yet been dis- 
covered within its borders. 
Of the 68 species here listed 29 are, so far as our present knowledge 
goes, endemic, being confined to the country. The endemism of 
Bolivia as illustrated by this group is thus about 43% as against 
about 55% in Peru and 59% in Colombia.’ ee 
After deducting the 29 endemic species, there remain 39 Bolivian 
Eupatoriums which extend to other countries. Of these.only 18 are 
known in Peru, while nearly all the others are species common to 
southern-central Brazil and northern Argentina. Beyond a very 
few species of wide distribution there is a surprisingly slight common 
element between the Bolivian and Paraguayan members of the 
genus, although Eupatorium is pretty well represented in both of 
these contiguous countries. ee 
In Bolivia, so far as we know it to date, there is a striking absence of 
certain rather characteristic groups, namely: : 
1) A series of § Subimbricata which includes E. glutinosum, E. 
persicifolium, E. buddleaefolium, E. discolor, and E. Salvia—shrubby 
1 Although 82 Peruvian species of Eupatoriwm were eae gaa by the 
writer, Proc. Am. Acad. lv. 42-85, — 
known species—would better be transferred to the nearly 
Li ; . i i koned 
2 i 3 Eupatorium for Colombia was 1n 1918 recko 
at 53 0; g ee ie Le ~— coats several new oaroeaas gccece bratty — 
discovered and one mistakenly reported (E. Dombeyanum 
the Colombian flora. 
