Portion of mature I'nnid, under side.
ASPIDIUM THELYPTERIS.
SwAiiTZ. Sm it h . H o o k e r and A r n o t t . M a ck a y .
S c h k u i ir . AVil l d e n o w . Sp r e n g e l .
P L A T E X V I I I . V O L . V I .
Lastrea thelypteris,
Aspidium palustre,
Acrostichiim thelypteris,
Polypodium thelypteris,
“ palustre,
Polystichum thelypteris,
Nephrodium thelypteris,
Athyrium thelypteris,
Jlemestheum thelypteris,
Dryopteris thelypteris,
Thelypteris palustris.
P e e s l . D e a k ik . B a b in g t o x .
JXeaa' i ia n . M o o e e . S o w e e b y .
G-e a t .
L ix i ^-2e u s . B o l t o n .
L in n a s u s .
S a l is b u e y .
B o t h .
S t e e m p e l .
S p r e n g e l .
N e w m a n .
G e a y .
S c h o t t .
Aspidium—The Shield Fem. Thelypteris—LiiGy-TevQ.,
Ix THE S e c t io n L a s t r e a oe A u t h o r s .
T h e Marsli or Female Buclder Fern is an iuterestiug bog-
growing species.
A widely-spread tliougb. local British Fern, less common in
Ireland, and only found in one locality iu Scotland, namely.