P E Z I Z A a t r o - r u f a .
JBlack cmd R e d P e z iza .
C la s s a n d O r d e r CRYPTOGAMIA FUNGI, Linn. N a t . O rd . FUNGI, Link.
GENERIC CHARACTER.
i
Pileus stipitatus aut sessilis, plus minusve cupuliformis vel complanatus, tubulis
ehngatis sporidiferis in pagina superiore.
Pileus stipitate or sessile, dilated upwards into a cup-shaped or flattish receptacle,
with tubular, elongated, sporidiferous cells in the upper surface
or disk.
SPECirtC CHARACTER.
P e z i z a a tro-rufa; cupula subghbosa, ore contracto, ad basin barbato-radicata,
intus atra, extus glabra, nigra, praicipue ad margtnem rufo-pruinosa.
P. cup subglobose, with a contracted orifice, fixed by a root o f beard-like
fibres, black within, the outer surface black, with a red bloom, especially
towards the margin.
H a b . On rotten branches o f trees lying on the ground, in autumn. Au-
chindenny wood. D r B a in b h id g e .
Cup from h a lf an inch to three-fourths of an inch in diameter, nearly globose,
o f a firm yet b rittle substance, the orifice considerably contracted,
the margin rather thin, and entire, the base furnished with a mass of
intensely black radicating fibres, an inch in length. Hymenium glabrous,
intensely black. Outer surface o f the cup glabrous, even, black, tinted
with a brick-red bloom, especially towards the margin. Asci very long,
somewhat clavate. Sporidia oval, yellow under the microscope.
This very singular species of Peziza appears to have a
strong affinity with several others contained in F r i e s ’s second
series (Lachnea) of the genus; but it is remarkable for having
the root composed of a beard-like mass of filaments, while the
remainder of the outer surface is glabrous. I find none resembling
it in F r i e s or P e r s o o n .
Fig. 1. p . atro-rufa, natural size. Fig. % A plant vertically
Asci and sporidia ; magnified.
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VOL. VI.
divided. Fig. 3.