1000 CRYPTOGAMIA. FILICES. Polypodium. 
Var. 1. Primary wings long, spear-shaped, acute, distant; leafits distant, 
pointed. 
(E. Bot . 1587. E.)— Bolt. 46— FI. Dan. 401— Pluk. 180. 5— (H. Ox. xiv. 
4. 28. E.) 
From four to seven inches high. Stem red, bare for about two inches at 
the base ; smooth, slender, brittle. Leafits more than twice as long as 
they are broad. In habit appproaching nearly to P. rhceticum , but it is 
not distinctly doubly winged like that plant, nor are the lobes of the 
leafits regularly serrated at the edges, as in that. 
Var. 2. Primary wings spear-shaped, acute ; leafits crowded. 
Bolt. 27— Barr. 432— J. B. iii. 741. 2— Seguier. 1.1. 
From two to six inches high. Stem red, bare for half to one and a half 
inch from the base; smooth, brittle, but less slender than in the preced¬ 
ing. Leafits not equal in length to twice the breadth. 
Var. 3. Primary wings spear-shaped, blunt. 
About three or four inches high. Stem red, bare for half to one inch from 
the base; smooth, brittle, slender. 
This has a general resemblance to P. dentatum, but differs from that in 
the colour of the stem, in being doubly winged, and in the want of fine 
teeth at the ends of the lobes. 
Mr. Griffith, of Garn, Denbighshire, favoured me with specimens of these 
three varieties gathered from the same root, and I have seen a single 
specimen uniting the characters of the two former. 
Brittle Polypody. (Aspidium fragile. Sw. Willd. Hook. Cyathea 
fragilis. Roth. Cystea fragilis. Sm. Dry stony places, and old build¬ 
ings, in the mountainous parts of Britain. P. June—Sept. 
P, trif'idum. Primary wings spear-shaped, blunt: leafits of the 
lower pair of wings mostly three-cleft: stem bordered. 
E. Bot. 163. 
Three or four inches high. Stem brown green, slender, bare for one inch or 
more at the base; edged with a narrow border on each side. Wings nearly 
triangular ; leafits three-cleft, the middle segments sometimes notched. 
I am indebted to J. Wynne Griffith, Esq. for a beautiful specimen of this- 
plant. It is sufficiently distinct from P. fragile , though in habit much 
resembling our third variety of that species. Both this and P. fragile 
have their capsules in a globular cyst, which seems attached to the 
foliage at one point only, and readily separates from it. (Dr. Greville 
considers them the same, and states that he possesses specimens fC ex¬ 
actly intermediate.” E.) 
(Three-cleft Polypody. P. regium. Linn. Aspidium regium . Sw. 
Willd. Hook. Cystea regia. Sm. Cyathea incisa, E. Bot., where it is 
mentioned as having been found by Mr. T. F. Forster, jun. on a wall 
near Walthamstow, and that he thought it distinct from P. fragile. Mr. 
Griffith found it on Cwm Idwell. Rocks at the dropping well, Knares- 
borough. Mr. W. Christy. Ben Lawers. Maughan, in Hook. Scot. E.) 
P. liiiiE f T ic um. Primary wings spear-shaped, distant: leafits deeply 
lobed: lobes regularly toothed at the edge. 
Dicks. AT. S.—Boit. 45 and 2. 6* 
