JENNINGS: FERNS OF THE ISLE OF PINES 133 
States. The best fern collecting in the Nueva Gerona 
district, as indeed for the island in general, was along 
the steep clayey or rocky banks of the arroyos. These 
had at that time but little water, only here and there 
pools, but the narrow and steep-banked channels were 
usually shaded by thickets of the coco plum and other 
shrubs or trees and were moist enough to favor the growth 
of many ferns. Growing out of the side of the perpen- 
dicular banks of a shallow arroyo, about a mile east of _ 
Nueva Gerona, were discovered two communities of the . 
tree fern, Cyathea arborea (L.) Sm., with ascending trunks 
six or seven feet tall. In other er ATTOYOS, often 
where shaded by the coco plum, were A Naieeanines 
L., A. fragile Sw., and Blechnum Shen Rich. 
At the outskirts of a jungle around a fresh-water pond 
near the base of Caballos ridge, there was found climbing 
im masses upon other — waist high, Lyeopedinuns 
— cernuum L., and near by, g in much the same ae 
manner, the — delicate but in sage tough os 
ii PS 2 
