re. 
CRYPTOGAMIA. FILICES. Polypodium. 
P. fonta’num. Wings egg-spear-shaped, alternate; lobes 
deeply scolloped. 
(4) Leaves doubly winged. 
P. aculea’tum. Primary wings crescent-shaped : acute : 
Jeafits serrated with prickles : stem chaffy 
P. - gti sum. Primary wings spear-shaped: le afits 
strap~ ito ae wing-cleft, and serrated with fine 
prickles 
P. fe’mina, Primary wings strap-spear-shaped : leafits 
slender, acute, wing-cleft, or serrated : stems smooth 
upwards, 
P. crista’tum. The lowermost secondary wines much 
longer than those nearest opposed to then 
P. fragile. Primary wings ‘spear-shaped ; ‘ais wedge, 
egg, or strap-shaped : Sere nts bluntly or sharply 
obed ; stem very slend 
P. triffidum. Primary wings iscadiaie blunt, leafits 
of the lower wings mostly 3-cleft: stem bordered. 
P, rhe’ticum. Primary wings spear-shaped ; leafits egg- 
spear-shaped, sharply serrated ; lower pairs un- 
equal, 
(5) Leaf triply winged. 
P. Dryop’teris. Leaves 3 on a stem; doubly winged. 
(1) Leaves wing-cleft ; lobes united at the base. 
P. Lobes oblong, somewhat serrated, blunt: root scaly. 
Ludw. 18—Curt.—Fl. dan. 1060-Kuiph. 6—Bolt. 18-Bzll- 
191—Blackew. 215-Tourn. 316-Wale.-Woodv. 27 1-Gars- 
466—Fuchs, 588-Trag. 540-Dod, 464. 2—Ger. em. 1132. 
2~Tourn. 316-Ger. 972-Matth. 1293—Dod. 464. 1- 
Lob. obs. 475. 1. it. i. 814. 2-Ger. em. 1132. 1—Park- 
1039. 1-H. ox. xiv. 2. row 1. 1-Ger. 974. 1-Cam, 
epit. 9903—Lom, 1. 224. 1. 
Lobes slightly serrated at the edge. Fractifications yellowish 
brown, in rows, parallel to the rib of the lobes. 
