Chap. IV] TRoPICAI. DISTRICTS CONSTANTLY MOIST 325 



Fig. 16^. Nidulariuni Innocentii. A tank-epiphyte from Brazil. Half the natural size. 



Tank-cpiphytcs. The epiphj'tic Bromeliaccae, which belong particularly 

 to the genera Tillandsia, Vriesca, Aechmea. and Nidularium, possess, in 

 the majority of cases, rosette-like vegetative shoots, whose stiff leaves are 



