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species) and epiphytic ferns, arums, bromeliads, orchids, pepero- 

 mias, and cacti. It is rare to find a tree that is entirely free and 

 many are very heavily loaded with them. Bromclia sylvestris Willd. 

 and Aechmea hracteata (Sw.) Griseb., two large bromeliads, occur 

 in large numbers throughout the area, mostly as terrestrial forms, 

 and specimens of an unidentified Agave are not uncommon. 

 Characteristic tree species include Erythrina honditrensis Standi., 

 Acacia riparia HBK., and Pithccolohium duke (Roxb.) Benth., 



A tree loaded with various epiphytic and parasitic plants characteristic of the 

 semi-arid woodland region. 



all of which are armed and common ; Bursera Sinwntha (L.) Sarg. 

 which is very distinctive because of its smooth, brown, papery bark 

 and height which is greater than many of the other trees in this 

 area; several species of Coccoloba; Clusia flava Jacq. a species 

 widely distributed in Central America ; Hasseltia floribunda HBK. ; 

 Ccltis igiianaea (Jacq.) Sarg.; Cupania glabra Sw., etc. Shrubs or 

 sometimes small trees include several species of Piper; Ardisia 

 paschalis D. Sm. which is common ; Riisselia sarmentosa Jacq. ; the 

 almost leafless PcdilantJuis titliymaloidcs Poit. with its curious, 

 slipper-like involucre ; Jatropha urcns L. with stinging hairs which 



