THE FERN BULLETIN 



3 



sinus, and are more tinged with yellow. These com- 

 parisons are mainly based on the examples found 

 growing together, both being in fruit. Most of the 

 others were in fruit also. 



The habitat of L. porophUum is given as sandstone, 

 being confined to this substratum as far as known. 

 The plants in the Dells were all on shelves of Potsdam 

 sandstone, and with a north exposure, deeply shaded 

 but not very moist, usually well up towards the upper 

 part of the rocks. The L. lucidulum did not differ in 

 this respect, though Underwood says this in Indiana 

 took a lower, moister place when the two were neigh- 

 bors. It would more accurately characterize the con- 

 ditions in the Dells to say that they grow in the shal- 

 low beds of humus on shelves of sandstone. Possibly 

 the roots may reach the rock. 



Chicago. 



ASPLENIUM ANDREWSII. 



BY WILLARD N. CLUTE. 



Some time during 1904 Mr. D. M. Andrews, well 

 known as a plant collector and nurseryman, found a 

 small fern growing in the crevices of a white sand- 

 stone cliff in Boulder Canyon, Colorado at an altitude 

 of about 5000 feet. The fronds were quite small and 

 somewhat triangular in shape but suggested those of 

 Asplenium Bradleyi to which the_ plant is manifestly 

 related if, indeed, it is not specifically identical with it. 

 Prof. Nelson, to whom Mr. Andrews sent specimens 

 regarded it as a distinct species and in the "Proceed- 

 ings of the Biological Society of AYashington," for 

 December 27, 1904, described it as Asplenium 

 Andrewsii in honor of the discoverer. 



It is quite likely that had this fern been found in a 

 colony of Asplenium Bradleyi, further east, it would 



