37 
the Clusia is here quite suggestive of the widely different banyan 
of the East Indies. It illustrates well what a luxuriant develop- 
Fic. 11. Aé¢fadea, at Culebra, Canal Zone. Detail of the cluster of fruit shown 
in Figure 10, 
ment certain trees in the tropics can attain on a practically naked 
rock with no soil except that formed by their own fallen leaves 
