FEB. 1907. FLORA SAND KEYS OF FLORIDA MILLSPAUGH. 199 



WOMAN KEY 

 MARCH 14, 1904 



Andropogon glomeratus (2398) | Galactia spiciformis (2422) 



tf Atriplex cristata (2411) O Hymenocallis caribaea (2405) 



f Avicennia nitida (2410, 2429) n Laguncularia racemosa (2414, 2433) 



<P Batis raaritima (2413) ^ Lithophila vermicularis (2424, 2436) 



< Borrichia arborescens (2420, 2425) Y Panicum maximum (2399, 2435) 

 A Cakile fusiformis (2408) A Pithecolobium guadalupense (2423) 



Calonyction album (2400, 2432) } Rhizophora mangle (2421, 2430) 



cf Cenchrus tribuloides (2437) g Rivina humilis laevis (2403, 2406) 



c~ Conocarpus erecta (2407, 2415) Sesuvium portulacastrum (2416) 



Cyperus brunneus (2417, 2418, 2434) D Solanum bahamense (2404, 2426) 

 TTt Dondia linearis (2419) f Suriana maritima (2412, 2431) 



Euphorbia buxifolia (2409, 2427) I Uniola paniculata (2397) 



Euphorbia Garberi (2396) / Waltheria americana (2402) 



<j> Euphorbia trichotoma (2401, 2428) 



A low, sandy islet, less than a mile long and about one quarter 

 mile wide, composed of an abrupt southeastern beach rising about 

 three feet above the level of the sea, backed and extended by two 

 mangrove colonies. 



The southeast beach is fringed with a line of Sesuvium, terminated 

 on the west by a few plants of Cakile. On the rise above this fringe 

 grows a nearly complete line of Uniola, back of which the open plateau 

 of the key is clothed with a dense growth of Andropogon, amongst 

 which are scattering plants of Panicum maximum, Hymenocallis, 

 Euphorbia buxifolia and E. Garberi, and Waltheria. On the mud flat, 

 between the higher land and the border of the mangroves, are sep- 

 arated colonies of Suriana, Sesuvium, Cyperus brunneus, Atriplex cris- 

 tata, and Lithophila vermicularis; a single individual of Dondia linearis; 

 and two shrubs of Pithecolobium. At the western extremity of the 

 AnJropogon community, evidently profiting by the shade cast by the 

 Avicennias, are a few individuals of Rivina humilis laevis, Calonyction 

 album, Solanum bahamense, and Euphorbia trichotoma. The mangrove 

 border presents its usual association of Borrichia arborescens, Batis, 

 Sesuvium, Laguncularia, and Avicennia, and two separated nuclei of 

 Conocarpus erecta. 



The western half of the key, separated by a narrow strait, is a 

 mangrove colony in which a new bit of dry land is in process of forma- 

 tion. The flora of this terra nova shows mostly individual infarction 

 in its Solanum, Suriana, Calonyction, Lithophila, Euphorbia havanensis, 

 and Borrichia arborescens elements, while its Euphorbia buxifolia, Cen- 

 chrus tribuloides, Cyperus brunneus, and Panicum maximum show an 

 early tendency to communize. Its mangrove border evidences, so 

 far, only the primal elements of the usual society Laguncularia- 

 Avicennia. 



