2616
W O O D S I A ilvensis.
Oblong-leaved Woodsia.
CRYPTOGAMIA Filices.
Gen. Char. Clusters of fructification roundish. Involucre
cup-shaped, open above, the margin cut
into many often capillary segments, including
pedicellated capsules ; raised receptacle none.
Spec. Char. Leaflets oblong, deeply pinnatifid, with
many oblong segments, beneath, rachis and
stipes chaffy.
Syn. Woodsia ilvensis. Br. in Tr. of Linn. Soc.
v. 11.173. Engl. FI. v A . 322. Spreng. Syst.
Veget. v. 4. 125.
Acrostichum ilvense. Linn. Sp. PI. ed. 2. 1528.
FI. Dan. t. 391. (bad.)
Polypodium ilvense. Swartz. Syn. Fil. 39. JVilld.
Sp. PI. v. 5. 198. Schkuhr Fil. t. 19.
Nephrodium lanosum. Mich. Am. v. 2. 270.
N. rufidulum. Mich. Am. v. 2. 269.
Filix alpina, Pedicularis rubræ foliis subtus villosis.
Raii Syn. 118.
I "HE above synonym of Ray, Mr. Wilson is decidedly
of opinion, refers to W. ilvensis rather than to W. hyper-
borea, under which Sir James Smith has included i t ; and
the character is indeed admirably expressive of this species.
Thus Mr. Lhwyd was the first discoverer of this very rare
plant, upon Clogwyn y Garnedh, “ a precipice immediately
below the highest peak of Snowdon, which faces the east (not
the northwest as stated in Ray).” {Wilson.) Mr. Wilson
finds it at Twll Du, the Botanic Garden of Snowdon, and
distant about three miles from the former station.
This has probably been confounded by many botanists