HYMENOPHYLLUM. 
9 
X H. dichotomum (Cav.) A beautifully crisped and transparent 
species, 4 to 6 inches high, from Chili ; with broad and 
highly divided (3-4 -pinnatifid) deep green fronds, sharply 
toothed or torn at the edges ; on erect winged stalks. On 
mossy trees and rocks. 40° to 55°. 
% dilatatum (Sw.) One of the largest and most beautiful of 
this charming genus, growing among moss and decaying 
vegetable matter in New Zealand. Fronds 14 to 20 inches 
high, broad, pale green, thrice divided ( tri-pinnatifid) , with 
attenuated and gracefully drooping segments. Stalks erect, 
winged. 40° to 55°. 
elasticum (Bory.) A graceful and lovely species from the 
Mauritius , with erect or curving ovate- acuminate thrice 
divided (tri-pinnatifid) fronds of very delicate and sin- 
gularly elastic texture, climbing on trees. 55° to 70°. 
elegans (Spreng.) A very delicate species with pendent, 
velvety (pinnate) fronds 4 to 8 inches long, with slender 
or simply forked linear divisions, found on rocks and trees 
in Jamaica. 50° to 60°. 
y. flabellatum (Labill.) A lovely fern from Tasmania , with 
dense, glistening, twice divided (pinnate) fronds, 6 to 12 
inches long. Pendent from the trunks of tree-ferns, &c. 
40° to 65°. 
X flexuosum (A. Cunn.) Closely allied to U. crispatum, but 
differs in having larger and more divided fronds, which are 
everywhere beautifully crisped and undulated. New Zealand . 
Very humid. 40° to 65°. 
fucoides (Sw.) A pendent species from the West Indies , 
with broad, attenuated, dense, twice or thrice divided 
(li-tri-pinnatifid) fronds, toothed at the margin, and 3 to 5 
inches long. 50° to 70°. 
