6 s [ 7 2 8 ]
L I C H E N fuciformis.
Flat-leaved. Orchal.
CRYPTOGAMIA Alga.
G en . Ch a r . Male, fcattered warts.
Female, fmooth fhields or tubercles, in which the
feeds are imbedded.
Sp e c . Ch a r . Leafy, divided, pointed, flat, nearly up*
right, tapering at each end, greyifh white, ob-
fcurely downy, fet with white mealy warts. Shields
convex, blackifh.
Sy n . Lichen fuciformis. Linn. Sp. Pi. 1 6 1 4 . Dick/.
Crypt, fa ß . 3 . 1 7 . With. v. 4 . 5 1 . Hull. 2 9 5 .
Lichenoides fuciforme tindlorium, corniculis longi-
oribus et acutioribus. Dill. Muß. 1 6 8 . 1 . 2 2 , 2 3 .
ƒ - « 1 .
p '
VJATHERED on coarfe granite rocks at Tintagel, near
King Arthur’s caftle on the Comifh coaft, by Mr. Sowerby
and Mr. D. Turner, who were informed that this fpecies is collected
for the dyers’ ufe indifcriminately with L. Roccella,
t. 21 x, or rather that of the two the fuciformis is moll ufed.
Mr. Dickfon had it from Guernfey. Dillenius truly remarks
that it abounds in the Eaft Indies (where it grows to a large
fize) as well as in the Canary iflands.
It forms denfe tufts, each frond being flat or eompreffed, in
which particular it differs from L. Roccella, and all botanifts
have therefore agreed to diftinguifh them; in colour, furface,
powdery warts, in fhort every other mark except the generally
larger fize of the fuciformis, they entirely agree, and perhaps
may be only varieties; but that future inveftigations upon phy-
fiological principles muft decide. Some fmall cylindrical
branches now and then occur in the prefent plant. Befides
the powdery warts, we have in one fpecimen difcovered a
blackifh prominent tubercle; Dillenius defcribes the tubercles
on his fpecimens t, 23 as afh-coloured.