VOL. 5] Voyage of the Wahlberg. 21 
pened after abundant rains, and forty species of plants were found 
along the beach and among the rocks. The species of Rhus 
were absent, and the tallest forms of vegetation were a few plants 
of Cereus gummosus and C. Cochal. The only insular plants 
found were Lschscholtzia ramosa and Perityle Grayt. Others, 
growing also on the mainland and deserving of mention, were 
flosackia Watsont, Perityle rotundifolia, Franseria bipinnatifida, 
its most southern known habitat, Senecio Lyonz, found first on 
Santa Catalina, Phacelia ixodes and P. Parryi. Mesembryanthe- 
mum crystallinum, Encelia Californica, Amblyopappus pusillus, 
Leptosyne maritima, Sonchus tenerrimus, Euphorbia misera and 
other vegetation common to these northern Mexican islands were 
abundant. 
Sailing southward the next island on the route was San 
Geronimo, or Round Island, as it is often called. This island is 
scarcely a mile long. The highest part is about a hundred 
feet above the ocean, and most of it is much lower. Innumer- 
able sea-birds make their home here, and the only human visitors 
are the guano hunters. The scant vegetation is prostrated by 
the winds that blow the sand about and almost bury it. Like 
Todos Santos and San Martin, there is no fresh water, and the 
vegetation depends upon frequent fogs and uncertain rains, for 
moisture. Only the following four species of flowering plants 
grow upon the island: Lavatera venosa, a few plants—hitherto 
this showy malvaceous shrub has been supposed to be endemic 
on the San Benito Islands, and probably seeds carried by birds 
colonized them here—the other three plants are : Mesembryan- 
themum crystallinum, Lycium Richii and a species of Sueda. 
From San Geronimo a long sail westward brought us to Guada- 
lupe Island, that place most interesting to all naturalists. The 
flora of this island is quite well known, having been collected by 
several botanists, who have written much concerning it. At this 
time the vegetation was very rank and green, but not as far ad- 
vanced as that of the islands nearer the coast we had just visited, 
Most of the plants were not in blossom, and only at the lowest 
elevations was it possible to find them suitable for specimens. 
The most interesting part of the flora is confined to the cliffs, 
