1915] 



BRITTON VEGETATION OF MONA ISLAND 39 



TILLANDSIA RECURVATA L. 



Common on trees and shrubs: Porto Rico; Hispaniola; Bahamas; Curacao. 



CALLISIA REPENS L. 



Occasional on the coastal plain and on the plateau: Porto Rico; Hispaniola; 



Curacao. 



COMMELINA VIRGINICA L. (0. elegans HBK.) 



Frequent on the coastal plain: Porto Rico; Hispaniola; Bahamas; Curacao. 



HYMENOCALLIS EXPANSA Herb. 



Frequent in coastal sands. Determination from foliage only, therefore un- 

 certain. 



FURCRAEA TUBEROSA Ait. f. 



Coastal plain between Sardinera and Ubero; probably introduced from Porto 

 Rico. Determined from leaf specimens only: Porto Rico. 



IBIDIUM LUCAYANUM Britton 



Low woods, coastal plain near Sardinera: Porto Rico; Bahamas. 



EPIDENDRUM PAPILIONACEUM Vahl 



Common on shrubs and on the ground, coastal plain and plateau: Porto 



Rico; Hispaniola; recorded from the Bahamas. 



DOMINGOA HYMENODES (Rchb. f.) Schltr. 



On small trees between Sardinera and Ubero: Hispaniola [Cuba]. 



DICOTYLEDONS 



PEPEROMIA HUMILIS (Vahl) A. Dietr. 



Shaded limestone rocks near Sardinera. Plants with only the upper leaves 



opposite: Porto Rico; Hispaniola. 



CELTIS TRINERVIA Lam. 



Base of cliffs, Sardinera: Porto Rico; Hispaniola. 



FICUS LAEVIGATA Vahl 



Coastal plain and plateau; largest at the bases of cliffs: Porto Rico; His- 

 paniola. 



FICUS STAHLII Warb. 



Frequent along the bases of cliffs, eastern edge of the coastal plain. Trees 

 up to 12 m. high. Determined from foliage only: Porto Rico. 



CHLOROPHORA TINCTORIA ( L. ) Gaud. 



Base of cliffs, Sardinera: Porto Rico; Hispaniola. 



PILEA TRIANTHEMOIDES (Sw.) Lindl. 



Frequent on the coastal plain: Porto Rico. 



PILEA MICROPHYLLA (L.) Liebm. 



Occasional on the plateau: Porto Rico; Hispaniola; Bahamas; Curacao. 



COCCOLOBIS UVIFERA (L.) Jacq. 



Common on coastal sands and rocks: Porto Rico; Hispaniola; Bahamas; 



Curacao. 



COCCOLOBIS OBTUSIFOLIA Jacq. 



Common on the coastal plain and on the plateau: Porto Rico; Hispaniola; 

 ? Bahamas. 



COCCOLOBIS LAURIFOLIA Jacq. 



Common on the coastal plain and on the plateau: Porto Rico; Hispaniola; 

 Bahamas. 



