PLATE IV. 
Fig. 18.—Marsn Fern. Hemestheum Thel ypteris 
For description see p.91. A detached pinna 
below the frond shows the fructification. 
~~ 19.—Mountain Fern. Lastrea montana, bebo 
A detached sere below the frond shows 
the fructification. 
Fig. 82.—Hupson’s Spteenworr. leniwm lanceo- 
latum, p. 128. Ap 
Fig. 88.—Btack Srieexworr. Asplenium Adiantum- 
cies nigrum, p. 132. 
i Big. <gaerh SPLEENWoRT. Asplenium marinum, p. 
Fig. gre SpLeeNwort. Aspleniwm viride, p 
_ Fig. 87—Mamennam Spieenworr. lenium Tri- 
; chomanes, p, 144, —? 
Pe re rere 
