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S PHÆ R IA CoRYLi.
H a zle -lea f Sphoeria.
C l a s s a n d O i id e e CRYPTOGAMIA FUNGI, Linn N a t . O r d . H YPO X Y LA ,
De Cand.
GEN ERIC c h a r a c t e r .
Perithecia gelatina diu farc ia. Asci snbclavati, sporidiis simplicibus, pellucidis
villi vel fum i instar expulsus.—Innatæ, epidermidæ iectæ, dein sæpe eruni-
pentes F r i e s .
Perithecia remaining for a length of time filled with gelatine. Asci sub-
clavate. Sporidia simple, pellucid, escaping in the form of a villose
mass or vapour.—Innate, covered by the epidermis, at length often
bursting through it.
s p e c i f i c c h a r a c t e r .
S p h æ r ia Coryli ; peritheciis atris, disiinctis, in circidum dispositis, ostiolis erum-
pentibus spinulosis, basifmbria albicante cinctis.
S. perithecia black, distinct, arranged in a circle, the orifices exserted like
spines, and surrounded at their base with a white fimbriated collar.
S p h æ r i a Coryli, Batsch, Blench. Fung. Cont. 2 . f . 231.— De Cand. FL Franç.
V. 6. p. 129.—Pries, Scler. Suec. No. 201.—Syst. Myc. v. 2. p. 436.__
Schmidt et Kunze, Exsicc. No. 156.
S p h æ r ia fimbriata, var. /¡, Coryli, Pers. Syn. Fung. p. 36.
S p h æ r ia Gnomon, Schum. FL Soell. v. 2. p. 157-
H a b . On the leaves (while yet living) of the Common Hazel (Corylus
Avellana) , and probably on other species of the genus.
Perithecia arranged in little circles about two lines in diameter, very small,
intensely black, distinct, prominent, the lower half immersed in the substance
of the leaf, and producing a black, shining dot on the opposite
surface. Orifce or Ostiolum exserted like a little spine or tube, erect,
black, equal in its diameter to the apex, which is obtuse, at its base
surrounded by a ring or collar, composed of a thin, white, membranaceous
substance. Asci clavato-fusiform. Sporidia minute, ovate.
A pretty little Sphæria, supposed to be a variety of S. fimbriata
by P e r s o o n , but differing from it in the perithecia
not being united into one mass, and in the ostiola being
shorter.