CRYPTOGAMIA. FILICES. Polypodium. 
- Such is the account given by Mr. Dickson.of this new spe- 
cies of Polypodium, which he first discovered in clefts of rocks 
in the Highlands of Scotland; but though this description and 
a specific charactss mention it being doubly winged, neither his 
wn figure, nor the specimens sent out in his Fasciculiof dried 
plants sitboHiée us to say that they are so. ‘They are only 
if 
any proper, mid-rib. The Polyp. dentatum of Forsk. in 
Gme.in’s Syst. Nat. isa different plant. 
P. Leafits alternate, triangular, blunt, raed ip 
lobes sharply toothe -d at the end: stem v 
Lob, adv, 361. 2, and ic. i. 810. 1—Bolt. vethee 432, 1— 
Pink. 89. 2, taal Ger. 980. 2. 
no 
valve: or rsdbck! Linn. ~ Plant 3 or 4 inches high, Szam. pale 
green, thread-like. Leafirs alternate. Bout. 
Old walls and rocks. Rocky places near Wybourne, West- 
moreland. — Also in Lota ea Sa Bout. P. June—Sept. 
(4) Leaves doubly winged. 
fonta’num, 
P, Primary mine crescent-shaped : leafits rhomboidal, with aculea’tum. 
chaff 
prickle-like teeth: stem 
Mill. ill.—Bolt. 26. 1 and 3-H, ox. xiv. 3. 15. f. 1-Pluk. 
179. 6, @ young plant only winged.—Pluk, 180. 1, fully 
grown. Pluk. 180. 3, in its middle state of growth. 
es da yar Leafits —.: cays 
ith a proje ting angle on the up near to the mid-rib. 
The leafits immediately adjoining to the primary mid.tib are 
very unequal in size, the uppermost being the Js and having 
n a youn gs state 
g-2 
Prickly Polypesty: Woods and shady places. [In a ditch in 
a meadow at Valley near Bromsgrove. Miss pore a ditch 
near Elmdon sotae; Warwickshire. Jan. ] P. June—Oct. 
Var. 2. Leaves sprinkled with a moss-like down. Piux. 
wing-cleft, and serrated with sharp-pointe 
P. Primary yes spear-shaped : leafits strap-eg eee spinalo ‘sum, 
Fi. dan. 707. 
This has been taken for the Polypod, cristatam, but itis very 
Midtiene from that ; of a more delicate and transparent texture, 
