L I C H E N s q u a n i u l o s u s .
Scaly-crusted Lichen.
CRYPTOGAMIA Alga;.
G en . Ch a r . Male, scattered warts.
Female, smooth shields or tubercles, in which the
seeds are imbedded.
S pec. Char. Crust imbricated, cracked, smooth,
brownish ash-colour; its fragments angular and
somewhat lobed. Shields su n k ; at length elevated,
flattish, o f a brownish shining black, with a border
like the crust,
Syn. Lichen squamulosus. Ach. Prod, 230. Schrad.
Journ.for ISO). 75.
L. pieeus. Dicks. Crypt, f a sc. 4. 2 2 . t. 1 2 . f 5.
Parmelia squamulosa,', Ach. Msth. 181, Winch
Guide, v. 2. 53,
Lecidea ? pieea. Ach. Metli. 51,
C o m m u n ic a t e d from the county of Durham by the
Rev. Mr. Harrivnan to Mr. Borrer, and observed also by the
gentleman last named and Mr. Hooker about Loch Carron,
and other parts of the highlands of Scotland. Mr. Dickson
indeed first found this Lichen in Scotland, and determined its
distinctive characters with his usual penetration, though foreign
writers -have not ascertained his synonym.
The crust spreads closely over rocks and stonçs, and is
calcareous and white within, though externally of a tolerably
uniform brownish or smoky ash-coloUf. Its surface consists
of prominent lobed imbricated fragments, approaching to the
appearance of a minutely imbricated Lichen, without any
precise border, and often cracks into separate dispersed fragments.
Shields numerous, small 5 when young sunk and
concave; afterwards raised, with a flat or uneven disk, of a
polished pitchy black, here and there brownish and semipel-
lucid, and with a wavy border of the colour and substance of
the crust,
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