FEB. 1907. FLORA SAND KEYS OF FLORIDA MILLSPAUGH. 219 



MARQUESAS "G" 

 MARCH 12, 1904 



f Avicennia nitida (2235) 



< Borrichia arborescens (2236) 



$ Cenchrus tribuloides (2229) 



Cyperus brunneus (2238) 



Euphorbia buxifolia (2225) 

 cf Euphorbia havanensis (2232) 

 /o, Euphorbia heterophylla (2233) 

 9 Euphorbia trichotoma (2224) 

 $ Iva imbricata (2237) 

 n Laguncularia racemosa (2227) 

 -3 Paspalum distichum (2239) 

 ^ Rhizophora mangle (2234) 

 ^-> Sesuvium portulacastrum (2226) 

 f Suriana maritima (2228) 

 >(c Tournefortia gnaphalodes (2231) 

 I Uniola paniculata (2230) 



This bit of sand and mangrove, about 200x75 ^ eet ' n extent and 

 2 feet above the tide, is the beginning of a connective destined to 

 unite the group on the south. 



The Uniola association of the sand plateau differs in its component 

 species from the other small keys in that the Euphorbia buxifolia 

 element is largely supplanted by Cenchrus and Euphorbia havanensis 

 and E. heterophylla the latter of doubtful specific differentiation. Its 

 vegetal distinction from the other keys is also prominent in the large 

 number of individuals of Avicennia associated in forming an unbroken 

 landward border for the mangrove colony. 



