FEB. 1907. FLORA SAND KEYS OF FLORIDA MILLSPAUGH. 203 



BOCA GRANDE KEY 



MARCH 13, 1904 



Alternanthera brasiliana (2279) 

 Ambrosia hispida (2280) 

 Andropogon glomeratus (2293) 

 Avicennia nitida (2286) 

 Batis maritima (2285) 

 Bumelia microphylla (2291) 

 Caesalpinia crista (2282) 

 Cakile fusiformis (2266) 

 Cenchrus echinatus (2300^) 

 Cordia sebestena (2296) 

 Cyperus brunneus (2298) 

 Diapedium assurgens (2283) 

 Dondia linearis (2294) 

 Erithalis fruticosa (2269) 

 Ernodea littoralis (2276) 

 Euphorbia Garberi (2271) 

 Euphorbia havanensis (2300) 

 Flaveria linearis (2267) 



C 

 D 

 f 



/ 



Gossypium religiosum (2287) 

 Hymenocallis caribaea (2273) 

 Laguncularia racemosa (2290) 

 Maytenus phyllanthoides (2292) 

 Melanthera nivea (2297) 

 Metastelma bahamense (2277) 

 Pectis Lessingii (2295) 

 Phaseolus pauciflorus (2284) 

 Pithecolobium guadalupense (2272, 



2278) 



Rhizophora mangle (2289) 

 Salicornia ambigua (2288) 

 Sesuvium portulacastrum (2275) 

 Smilax havanensis (2274) 

 Solanum bahamense (2268) 

 Suriana maritima (2299) 

 Waltheria americana (2270) 



This most interesting of all the isolated sandy keys is about 

 three fourths of a mile long and five eighths of a mile in width. It 

 rises abruptly, on the west, from a narrow beach to an elevation of 

 about 4 feet, then after exhibiting a narrow and but slightly vegetated 

 plateau quickly slopes to two small lagoons and a mangrove-surrounded 

 plain consisting principally of small bits of coral rock. 



The narrow western beach is flanked, at the base of the abrupt 

 bank which forms the wash line, by an almost continuous line of 

 Sesuvium, as is so often the case among these keys. The plateau 

 association is Andropogon-Cyperus, instead of Uniola-Euphorbia,\hz latter 

 being inexplicably absent, not even presenting a single individual of 

 its elements. At the northern end the mangrove border association 

 of Avicennia-Dondia-Salicornia-Batis is very characteristic, while the 

 heterogeneous admixture of species, between this association and the 

 beach, can but suggest a favorite resting ground for both sea and 

 land birds. 



The plain of coral debris is peculiar to this key alone in the 

 archipelago. It is nearly barren except for its odd aggregation of 

 shrubs of Cordia, Gossypium, Bumdia, Melanthera and Maytenus, the 

 first two of which suggest former residence of man. The passageway 

 between the plateau and the coral plain is flanked on each side by 

 large masses of Ambrosia that run into the Laguncularia on the north 

 and the mangroves on the south. 



