227 
XXIV. Ferns. Crypt. Filices. 
Moist Places, June, P. Rare. 
Pot ton Marshes. 
Obs : 
Plant extremely elegant^ divisions very Jine, fructifications 
ovate^ somewhat fringed, 
739. Marsh Polypody, — P. Thelypteris. 
Frond doubly winged, wings with other 
winged divisions, very entire, quite covered 
with impregnating dust on the under side. - 
Bolton. 43. 
Marshes, July, P. Rare. 
Potton Marshes, 
Obs : 
The outline of the whole frond^ taken collectively^ is spear- 
shaped, 
740. Prickly Polypody, — P. aculeatum. 
Fronds doubly winged, wings spear-shaped, 
with fringe-like teeth, stalk chalfy. — 
Bolton. XXVI. 1. and 3. 
Springs in the Shade, June, P. Rare. 
Eversholt, 
Obs : 
The lobe of that part of the leaf, which runs along the midrib, 
is shaped like an ear, and terminated by an awn, 
G g 2 
Club-moss. 
