H a b . — First collected by C h a r l e s W r ig h t in 18 4 9 ori n journey
from Western Texas to El Paso, in New Mexico. The collectors of
the Mexican Boundary Survey found it along the Rio Grande, the San
Pedro and the Gila, mostly on rocks. I have also received specimens
collected at Camp Bowie, by Mrs. S u m h e e , near Camp Grant, Arizona,
by Mrs. A, T. S m ith , and in Central Arizona by C l a r e n c e K in g and
by Dr. P a lm e r .
D e s c r i p t i o n . — This little fern has been confounded, first
with Gymnogramme pedata, from which it differs in having a
smaller frond, with obtuse lobes and a denser tomentum beneath,
a stalk without lustre, and an elongated root-stock, and
secondly with G. podophylla, from which the free veins sufficiently
distinguish it.
The fronds have the same five-angled shape as those of
G. triangularis, but have peculiar lobe-like wings along the
rachis and midribs between the pinnæ and the principal segments,
and are hispid with straight white jointed hairs on the
upper surface, and both tomentose and somewhat paleaceous
beneath. The veins are difficult to examine, but by soaking a
piece of a frond in hot water, and then scraping off the tomentum,
etc., they may be seen to be free and forking.
Plate X LV III., Fig. 6 - 1 1 .— Gymnogramme hispida. The drawing
is mainly taken from Mr. King's specimens. Fig. 7 shows a halfdenuded
segment ; Fig. 8, a scale of the rachis ; Fig. 9, a hair from the
upper surface, and Fig. 10, a little of the tomentum, from the under
surface.