Robinson and Greenman—Galépagos Flora. 135 
Art. XVII.—Contributions from the Gray Herbarium of 
Harvard University, New Series, No. IX; by B. L. 
Rospinson and J. M. GREENMAN. 
lL On the Flora of the Galapagos Islands, as shown by the 
collection of Dr. G. Baur. 
WHILE exploring the Galapagos Archipelago in the summer 
of 1891, Dr. George Baur secured, besides zoological specimens, 
a large collection of plants. he latter have recently b 
determined at the Gray Herbarium and for various reasons 
possess considerable interest. They furnish in several cases 
more copious material of hitherto imperfectly known forms 
and, as is to be expected, contain a certain number of new 
species. Furthermore Dr. Baur visited not only all the islands 
os a few species, enough material is at hand not merely to con-_ 
'm strongly the view that almost every island has its peculiar 
Thee several islands, more or less striking racial differences. 
pene facts, while in other respects noteworthy, derive a speci 
iterest from their relation to the probable origin of the flora 
rs, ‘ 
se Pad for the peculiar distribution of differing, yet closel} 
a forms upon the islands, and as the or is one whic 
: ts further attention, it seems worth while to present the 
Seal data in some detail. a) 
bet Sup S no species to be found upon the different islands © 
“etter illustrates the noteworthy racial divergence in related — 
