FEB. 1907. FLORA SAND KEYS OF FLORIDA MILLSPAUGH. 215 



MARQUESAS "E" 



MARCH 11-12, 1904 



Agave decipiens (2184) U Laguncularia racemosa (2192) 



Ambrosia hispida (2170) Melanthera nivea (2179) 



Andropogon glomeratus (2194,2207) = Metastelma bahamense (2172) 



f Avicennia nitida (2191) -j. Oreodoxa regia (2198) 



< Borrichia arborescens (2196) ^ Passiflora minima (2177) 



2 Caesalpinia crista (2207^) \5 Pharbitis cathartica (2200) 



A Cakile fusiformis (2183, 2190) A Pithecolobium guadalupense (2175, 

 -: Canavalia obtusifolia (2182) 2188) 



<^ Cenchrus tribuloides (2206) K Rhizophora mangle (2204) 



L Coccolobis uvifera (2197) $ Rivina humilis laevis (2203) 



+ Coccothrinax jucunda (22Ol)| =^ Salicornia ambigua (2186) 



Erithalis fruticosa (2187) O Scaevola Plumieri (2199) 



O Ernodea littoralis (2173, 2193) Sesuvium portulacastrum (2202) 



Euphorbia buxifolia (2171, 2185) / Suriana maritima (2174) 



<y Euphorbia havanensis (2180) % Tournefortia gnaphalodes (2195) 



3 Galactia spiciformis (2178, 2181) I Uniola paniculata (2205) 



J Jacquinia keyensis (2176) / Waltheria americana (2189) 



This most extensive link of the group exhibits no characters 

 materially differentiating it from islet "F." It showsa growing man- 

 grove bond in the process of forming land between its older southern 

 end and its younger northern spit. The total extent of the link is in 

 the neighborhood of 5 miles, while its dry-ground width is in no place 

 over 800 feet and nowhere over 6 feet above sea level. Its two extrem- 

 ities are wave and current washed, though the southern shows the 

 greater disturbance on account of the strength of the current that 

 flows between it and islet "F. " Here the strand is very abrupt and as 

 usual in such situations bordered at the wash line with Sesuvium. 



Situated on the higher ground of the northern end is a charcoal 

 burner's cabin, long since deserted, the former occupancy of which is 

 doubtless responsible for the nearby presence of Agave decipiens and 

 Oreodoxa regia, and possibly also of the sea grapes (Coccolobis), though 

 not at all for any other species of the islet's vegetation, the well 

 developed Coccothrinax being too far away from the cabin to admit the 

 possibility of its having been purposely planted there. The sheer rise 

 of the northwestern beach is characterized by the absence of vegeta- 

 tion, and the clothing of the higher level with a fringing Ambrosia 

 colony backed by the usual plateau association of Uniola and Euphor- 

 bia. The peculiar long stretch of but slightly vegetated sand joining 

 this point with the cabin end exhibits a very "spotty" avevectent 

 implantation. The absence of Sesuvium, Cakile,* and Hymenocallis and 



tSee also Thrlnax keyensis p. 240. 



'Except what might easily be a late implantation. 



