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i m TYM PA N IS coNSPERSA.
Commoîi Tytnpanis.
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C l a s s a n d O r d e u CRYPTOGAMIA FUNGI, Linn—N a t . O r d . H YPO X Y LA f
De Cand.
GENERIC character.
Perithecium cyathiforme, marginatum, apertum, superne membrana tenui fa tis cente
tectum. Asci f l f o r m e s , f x i .—F rie s .
Perithecium cup-shaped, marginate, open, covered above with a delicate
lacerating membrane. Asci filiform, fixed.
SPECIFIC character.
T ym p a n is c o n s p e rs a ; coespitosa, perithecia primo clausa sphoerioeformia, atra,
max aperta, e velo fatiscente albo-pulverulenta.
T. tnfted, perithecia at first closed, sphæriaform, black, at length open,
whitish and pulverulent from the minute remains of the velum.
T y m p a n i s c o n s p e r s a . Fries, Syst. Mycol. v . 2 . p . 1 7 5 -—Wahl. Fl. Lapp.
p . 9 9 1 -
S p h æ r i a c o n s p e rs a , Fries, in Vet. Ac. Handl. 1817, p. 112.—Sclerom. Suec.
Exsicc. No. 12.
C e r a n g i u m c o n s p e r s u m , Fries, Sclerom. Suec, E x s. No. 1 7 1 -
P e z i z a Aucupariæ, Pers. Mycol. E u r. v. 1. p. 327.—Grev. Fl. Edin. p. 426.
P e z i z a Pyri, Pers. Syn. Fung. p. 671.—Myc. Europ. v. 1. p. 327.—A li. et
Schmein. p. 342.
P e z i z a Sphærioides, Roth, in Ust. Ann. Bot, v. 1. p. 1 1 .1 .1. f. 6.—Nees, Syst.
p. 69. t. 38. f. 281.
P e z i z a populnea, Pers. Disp. Meth. Fung. p. 35.—Syn. Fung. p. 67I.—
Myc. Europ. v. 1. p. 32g.—Alb. et Schmein. p. 342.—Schwein. Fung. Carol.
No. 1252.
P e z i z a c o n g lom e ra ta , Wahl. Fl. Lapp. ed . 1. p . 534.
P e z i z a s p h æ r iæ f o rm i s , Reb. Fl. Neomarch, p . 3 8 7 -
H a s . On the dead branches of various trees, b u t mostly on the Mountain
Ash ( Sorbus AucupariaJ ; not unfrequent.
Bursting through the bark in roundish tufts of one to three lines in breadth.
Perithecia coriaceous, crowded, coming successively to perfection, distinct
at the top, b u t united below into one firm coriaceous base. At
first the perithecia are globose, closed, black, smooth, and altogether
resembling a Sphæria, covered by a thin membrane, which soon splits
and disappears ; afterwards they are obovate, somewhat rugose, hoary
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