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INSECT FERTILIZATION OF AN AROID PLANT. 
By Henry G. Hubbard. 
In the dense forests of the West Indian Islands a very characteristic 
feature of the luxuriant vegetation is afforded by the abundance of 
aroid plants. The giants of the family, Anthurium, Monstera, and 
their allies, are everywhere present, ascending the tree-trunks, or 
climbing along the outstretched branches and sending down their cord- 
like roots in a tangle of lianas; others less arboreal overhanging the 
Fig. 33. — Inflorescence of Philodendron sp.: a, exterior of spathe, showing fungus spot ; b, section 
of spathe, showing spadix one-half natural size ; c, Macrostola lutea enlarged— front leg and antenna 
do. — more enlarged. (From diagrammatic drawing by the author.) 
rocky ledges and spreading over the path their huge caladium like leaves 
to intercept any ray of sunlight that may chance to penetrate the arbo- 
real shield overhead. Among the varied forms, one of the largest is 
a species of Philodendron. This plant is nearly terrestrial, growing 
among rocks or upon fallen tree trunks. It is an indifferent climber 
and its root-stalk, although six or eight inches in diameter, does not, 
