—99— 



' Athyrium filix-foemina Roth. Lady Fern. Specimens were 

 collected by the writer in rich woods in various localities in 

 Flathead valley. The species seems to be rather common 

 throughtout the western half of Montana. 



Asplenium trichomancs L. Maidenhair SplEENWort. Col- 

 lected in the Flathead valley at Columbia Falls by R. S. 

 "Williams. 



Adiantum pedatum L. Maidenhair Fern. This species was 

 obtained by the writer along a mountain lake near Sperry Glacier 

 in Lake McDonald region. The altitude was 7.000 feet, some- 

 what above the altitude usually given. The species has been 

 collected in Deer Lodge county by Miss Hobson and at Lake 

 Terry by R. S. Williams. 



Cheilanthcs lanuginosa Nutt. Rock crevices, infrequent. Col- 

 lected at Ruby Cliffs in Madison county by Mr. Tweedy, in 

 Missoula county by Mrs. Kennedy, and at Deep Creek by R. S. 

 Williams. 



Cheilanthes gracillima D. C. Eaton. Collected at McDonald's 

 Lake by R. S. Williams. 



Pellaea occidentalis Rydberg. In crevices of rocks. Collected 

 in the Belt Mountains by Mr. Newberry ; in Silver Bow county 

 by Mrs. Moore, and at Tenderfoot Creek by R. S. Williams. 



Pellaea atropurpurca Link. Winter Brake. This species 

 occurs but rarely in Montana, preferring rocky places. Col- 

 lected in Tenderfoot Creek, Belt Canyon, by R. S. Williams. 



Pellaea densa Hook. A rare Montana fern, collected by R. S. 

 Williams near McDonald's Lake. 



Pellaea gracilis Hook. Slender clife Brake. Collected by R. 

 S. Williams at Camass Lake. 



Pteris aquilina L. Bracken. Frequent in the woods in the 

 Flathead valley. Specimens were collected by the writer at 

 Belton, a station near the summit of the Rocky Mountains on 

 the Great Northern railway. Collected also at Columbia Falls 

 by R. S. Williams, and at Missoula by Williams and Griffith. 



Pteris aquilina lanuginosa Hook. Collected by the writer at 

 Belton, Montana. 



Cryptogramme acrostichoides R. Br. Rock crevices and slides, 

 rather frequent in western Montana. Collected by the writer on 

 the summit of Mt. Lincoln. 



