FEB. 1907. FLORA SAND KEYS OF FLORIDA MILLSPAUGH. 237 



Batis maritime.: 



See concluding paragraph under this head. 

 Bidens leucantha: 



See note under Argemone leiocarpa. 

 Borrichia arborescens: 



See concluding paragraph under this head. 

 (_ 'akile fusiformis: 



None of the Antillean species is better adapted to dissemination 

 by water than this, nor indeed for ready spreading when once a foot- 

 hold is gained. See page 125. 

 Cacsalpinia crista: 



Doubtless aquavectent. The pods are excellent pontoons and are 

 often found at sea far from land. 

 Canavalia obtusifolia: 



Doubtless aquavectent. The pods are excellent voyagers and the 

 seeds retain their vitality even after prolonged salt water immersion. 

 Capraria hi flora: 



See note under Argemone leiocarpa. 

 Cenchrtis tribul aides: 



The fruits of this grass are especially adapted for clinging to the 

 webbed feet of marine birds; it is, on this account, one of the first 

 species to be implanted upon newly formed strands and islets. 

 Coccolobis uvifera: 



While the Sea Grape is a common plant on the rocky keys of 

 Florida and the shores of the Antillean Islands in general, and its 

 appearance on these sand keys might be considered by no means 

 extraordinary, yet I am inclined to judge that it is planted on Marque- 

 sas "E" (the only islet of the archipelago on which it is found). 

 Coccothrinax, jucunda : 



This species is common on the eastward keys of Florida and there 

 appears no valid reason why it may not have been implanted naturally 

 upon Marquesas "E." From the fact that this species will not survive 

 transplantation it is certain that the supposition that it had been 

 brought here to serve for future rethatching of the hut is erroneous. 

 Conocarpus e recta: 



See concluding paragraph under this head. 

 Cordia sebestena: 



The natural implantation of this species in both its localities 

 (Boca Grande and Loggerhead Keys) is open to serious doubt. On 

 account of the splendor of its flaming flowers it has become a common 



