﻿THE FERX BULLETIN 



5 



ium monathemum in one of these crevices. Again it 

 was found in the Avails of a box canyon where the spray 

 from a water fall tempered the atmosphere. Here too 

 grew A. trichomanes and a maidenhair. 



A. parvulum is also found in the walls of the box 

 canyons but also in the dry roof of the caverns and 

 about the base of the rocks. 



Pteris aquiJina is abundant above 7.000 feet 

 along the streams and in the parks. At S.000 feet Ne- 

 phrodium Ulix-nias may be found in the bed of the 

 stream among the rocks or in the springy nooks, and at 

 9,000 feet, in the last mile of the stream, will be found 

 Asplenium cyclosorum with its feet in the stream, some- 

 times a spreading cluster eight inches in height and 

 again under almost the same conditions it will be less 

 spreading and four feet in height. 



Pellaea marginata and its mass of lace-like foliage 

 thrives in the deep shadow of the cliffs at S.000 feet, 

 but I also found it at about (3.500 feet upon the north 

 side of a shadeless cliff in company with Nephrodium 

 patula, Polypodium thysanolepis and Xotholaena deal- 

 bata, all in great abundance. I found patula again in a 

 deep crevice at S.000 feet. 



The Maidenhairs settle about the limestone springs, 

 or live in the spray of a water fall and seem to require 

 a moist atmosphere. 



The Polypodiums are found rarely, and then fal- 

 catum hangs down from the roof of the dry caves, and 

 hesperium and thysanolepis cling to the face of a cliff, 

 where long poles are needed to punch them off. Once 

 hesperium was found facing the hot sun upon an ex- 

 posed mountain peak. Again a plant was found in the 

 leaf mould and shade with Cystoptcris fragilis, and 

 again another in the cold springy soil at the mouth of 

 a cavern. 



