LICHEN puslulatus.
Blistered Lichen.
CRYPTOGAMIA Alga.
G en. Ch a r . Male, scattered warts.
Female, smooth shields or tubercles, in which the
seeds are imbedded.
S pec. Ch a r . Umbilicated, membranous, lobed, blistered
and warty, greenish ash-coloured; beneath
dark-olive, deeply pitted. Shields flat, at length
plaited.
Syn. Lichen pustulatus. Linn. Sp. PL 1617. Ach.
Prod. 146. Huds.549. With. v. 4 . 64. Hull. 302.
Light/. 858. Ehrh. Crypt. 7 9 .
Umbilicaria pustulata. Schrad. Spicil. 102. Hoffm.
PI. Lich. t. 28. ƒ 1 , 2 . t. 29. ƒ. 4 .
Lecidea pustulata. Ach. Meth. 85.
Lichenoides pustulatum cinereum et veluti ambustum.
Dill. Muse. 226. t. 30. ƒ. 131.
V a r io u s of our often-mentioned friends have sent us this
beautiful and remarkable Lichen from Wales and Scotland,
where, as well as in the north of England, it grows on granite
rocks; but the fructification is so extremely rare, that, to shew
it more perfectly, we have at fig . 1 . delineated a Spanish specimen
sent by Don Simon de Roxas Clemente, an excellent
naturalist, now engaged in a hazardous journey among the
Moors. Ax fig . 2. is a Scotch specimen found by Mr. Menzies,
showing the more advanced state of the shields, when they
evidently assume the rugged or plaited configuration of the
other umbilicated Lichens, as was suspected by the excellent
Schrader. This confirms the genus of Umbilicaria, a genus
which will probably be one day generally adopted.
This species widely differs from all others of European
growth in its curiously blistered appearance. The branched
black warts are also remarkable. 7 he fructifications moreover
are bordered, being true shields, with a disk, at first flat and
even, afterwards either marked with an inner circle and a central
perforation, or with angular plaits.