90 BEAUTIFUL FERNS. 
rheilanthes tomcntosa, Hooker, Sp. Fil., ii., p. 96 (description and 
Texas plant), t. cix., A. — Eaton, in Botany of the U. S. and 
Mexican Boundary Survey, p. 234. 
Had. — Texas and New Mexico, Wright, No. 816; Fendler, No. 
1016; Indian Territory, between Fort Cobb and Fort Arbuckle, Palmer; 
near Canon City, Colorado, Brandegee; from the Rio Grande west- 
ward along the Gila to the Colorado River, Collectors of Mexican Boun- 
dary Survey. The kind of place where this fern has been collected is 
not recorded, but it probably grows in the clefts of rocks along the 
sides and edges of canons. 
Description: — This fern bears so close a resemblance 
to Cheilanthes tomentosa, that it is not at all surprising that 
there has been more or less of confusion between the two. 
It would seem that when writing his account of the genus 
Cheilanthes for the Species Filicum, Sir W. J. Hooker had, 
in his collection, no examples of the North Carolina C. tomen- 
tosa, and could identify it only by Link’s rather imperfect 
description and Kunze’s remarks in Silliman’s Journal. Hav- 
ing Wright’s specimens of the plant here described, and Gor- 
don’s fern from the Rattene Mountains — a plant not yet 
satisfactorily identified — he referred them to the species named 
by Link; and then perceiving with his accustomed delicate 
discrimination that Lindheimer’s and Bradbury’s plant was 
distinct from Wright’s, he gave the former the name of C. 
Bradbiirii. It was not until i860, when the Ferns for Chap- 
man’s Flora were being prepared, that any one suspected that 
the C. Bradburii was the true C. tomentosa. In 1866, I had 
