236 PROCEEDINGS OF THE AMERICAN ACADEMY. 
TABLE II. —continued, 
| Wenman. 
ra] . 
g 5 
~ 
0 => 
7 a 
S i=] 
= ) 
Gardner, 
Duncan. 
| Indefatigable. 
| Galapagos Ids. 
| 
= 
Eo 
2 
2 
x 
Scalesia Darwinii  . 
curr Saar merece 
divisa pi hignon pA ae ope be + 
incis. 
microcephala . .. . ~ 
narbonensis . 
i 
ovata . i 
pedunculata. ras 
retrofiexn “ye 
Snodgrassii . + 
Reape <4 
++ 
+ 
. sp. ? ; 
Sonchus oleraceus Pare 
Spilanthes Acmella. . . . _ 
diffusa 
Tagetes erecta . 
GENERAL FEATURES OF THE FLORA. 
The habital traits of the vegetation on the Galapagos Islands have been 
graphically although rather gloomily pictured by Darwin (2), 140, and 
by Wolf (1), 277. A. Agassiz (1), 57-62, and Baur, who visited the 
islands at a more favorable season, describe the flora as somewhat more 
luxuriant. The lower slopes of all the islands, however, are relatively 
sterile, arid, and rough, much of the surface being covered with irregular 
blocks of lava. The air, although not excessively hot, is very dry: 
Trade winds are said to be moderate in force, but almost constant 
The perennial vegetation of these lower parts of the islands is predom- 
natingly of a small-leaved xerophytic type, being composed of scattered 
and often sparse, stemmy shrubs and undershrubs, or wiry herbs and 
grasses, over which rise the bulky and grotesque trunks of arborescent 
species of Cereus and Opuntia. On those islands, which, like Gardner, 
Hood, Tower, and Bindloe, are entirely low, not attaining an altitude 
of 300 m., this is the only kind of perennial vegetation, except 4 few 
halophytes along the shores. On the higher islands, however, like 
_ Albemarle, Charles, Chatham, James, and Indefatigable, the upper parts 
