NATURAL HISTORY, TORONTO REGION 
Toronto it appears to be quite rare. In southwestern 
and eastern Ontario it is also fairly common. 
13. Asplenium filix-femina, Bernh. (Lady Fern). 
Very common and varied in form according to habi- 
tat and locality. Occurs in moist woods. 
14. Camptosorus rhizophyllus, Link. (Walking 
Fern). On moist moss-covered limestone rocks at 
Niagara Glen. In similar habitat at Credit Forks 
(White). Also from several other localities in On- 
tario. 
15. Polystichum acrostichoides, Schott. (Christ- 
mas Fern). Common generally in rich rocky woods. 
16. Aspidium thelypteris, Sw. (Marsh Shield 
Fern). Common everywhere from south to north 
along the grassy borders of marshes. 
17. Aspidium noveboracense, Sw. (New = York 
Fern). Reported rare in low woods from Peel 
County (White). Common northward. 
18. Aspidium marginale, Sw. (Evergreen Wood- 
fern). One of the most common ferns, occurring in 
open rocky woods. 
19. Aspidium goldianum, Hook. (Goldie’s Fern). 
Occurs in the Niagara peninsula, at Niagara Glenn 
and in eastern Ontraio, in low rich woods in cal- 
careous soil. 
20. Aspidium boottii, Tuckerm. (Boott’s Shield: |” 
fern). Several plants found at Madoc, Ont., at the 
foot of a limestone cliff in shaded situation. Here 
it occurred with Aspidium spinulosum intermedium 
and Aspidium marginale. 
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