vifion ceafes, and the fecond leaf terminates in diftind, iharply ferrated
lobes.
The feed-veffels are placed in round dots, on the under fide of the
lobes- two or three on the fmaller, f i v e or fix on the larger ; they are
of a brown colour, and diftinft. The whole plant is larger firmer,
more robuft, and of a ftronger green than the Polypodium fragile.
The Polypodium fragile in fome of its ftates, fee part i , page 5 1 ,
fo nearly refembles the Polypodium rhceticum, that offiers, as well as
S vftTf have been deceived by it. Hallar, Wais, &c. feem m doubt its
exffiencc- and it appears from their defcriptions, that they had not examined
the true Polypodium rhoeticum ; no more had otherwife o
0 ^ 0 0 3 a charaaer aT the inequaUty of fize in the thn'd leaves on the
oppofite fides of the rib of the fecond leaf, could not have been dilre
garded.
In my plate of varieties. P a r t i . Tab. 2, thofe of the Polypodium
fraJfte not being fufficiently expreffed, at the inftance of feveral friends,
1 have added T A B . X L F I -, in which I have carefully copied thefe
varieties. For on the two ftems given in the plate, by varying ^he fecond
leaves as I found them in feparate fpecimens, I have reprefented all tho
varieties which have been fuppofed moft to refemble the Polypodi
rhoeticum.
S n e c im » . of Pol,oodiom rhoeticom .nd AcrolHchom .holiptoris
„ T k d h . b ym , f t i .n d Dickfo,..
yamkarum Britanm^z ; the firft he gathered m Scotland, the laft, he
forms me, grows in plenty about Norwich.
ERRATA F I R S T P A R T .
iNTUOD„„trCCTTI.OONF , P.S.
difchargcd
tence.-^P- .
Polipodium r. Polypodium,
/J«o-r
M