164 
Botanically the island may be subdivided (1), into the halo- 
the sands of the seashore an rocks; b eae 
especially the sea-grape Greaiante ver clothing the sand 
unes, but also extending inland alon sides of ravines toa 
conside! rable | eae ae the three ieee (Rhizophora Man- 
gle, 
dunes, and the gras: a and several species of sedges 
which make up i turf of salt meadows. 
2) The xerophytic ante of the low rocky hills, characterized 
by Cacti (species of Cereus and Opuntia); the shrubs Plumicra 
alba, Acacia Farnesiana, and species of Rauwolfia and Euphorbia ; 
and the fleshy, herbaceous monkey-fiddle (Pedilanthus tithyma!o- 
ides 
(3) The weeds of cultivation, numerous species, mostly of ex- 
by several species of tree ferns growing in great luxuriance and 
abundance in the ravines ; many species of low ferns ; the slender 
mountain cabbage palin: the very spiny palm Basis: two 
species of Carludovica, the Spanish ash (/uga laurina) ; the tall 
gum elemi tree (Dacryodes) ; the bur-wood (S/oanea); the wild 
ust 
of Miconia, and several of Eugenia and Psychotria, epiphytic 
orchids, aroids and bromeliads, and several species of Piper and 
Peperomia. 
(5) The low, dense vegetation of the mountain summits and 
higher slopes characterized by the equitant and flat-leaved sedge 
rer : 
f ad g 
bedstraw Relnaniien - saghom (UL pespodtein’ and ferns of the 
genera Acrostichum and Gleiche: 
e net results of our eee consist of about two tons of 
living plants, including some go different species; 102 kinds of 
