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species, Bapiisia with 11 species, Oxals with g species, Viola with 
12 species, Rheata with 12 species, Ph/ox with 10 species, and 
Plantago with 7 species are here wholly unrepresented. On the 
other hand such families as Orchidaceze, Fabacez, Convolvu- 
lacee and Rubiacez are eed represented both as to the 
number of the genera and s 
The actual and a a auties of the plants inhabit- 
ing the coral sandrock ridge under consideration, brings out sev- 
Fic. 2. PINELAND. — This formation greatly predominates on the coral sand- 
rock ridge. The characteristic plant is Pinus £/fotti, and with it are abundantly 
associated several species of palms and a species of Zamia, Here occur the greal 
majority of endemic species of flowering plants, while fungi, hepa pans mosses and 
ferns are relatively scarce. About 43 per cent. of the species of flow plants 
known to grow naturally in the region under consideration occur in the scenes 
eral points of interest. To illustrate this more clearly I have 
introduced cuts * of the three main factors of plant distribution 
on the reef, namely, the Pineland, the Hammock and the Ever- 
glades.t The area occupied by the Hammock formation is in- 
* From photographs furnished by Prof. Rolfs and Mr. L. H. McCullough. 
+ These formations were described in a previous report on exploration in Florida. 
Journ. N. Y. Bot. Gard. 3: No. 26. 1902 
