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It is proposed by F r i e s to retain, under the name of Spkce-
ria, the sections Epiphericce and Suhinnatce of the Systema
Mycologicum : or those spheroid plants which are simple or at
most furnished with a slight stroma, innate, covered by the
epidermis, and in some cases bursting through it. The interior
is not tilled with a black pulverulent mass in maturity, as
in the genus Hypoxyhn, but, on the contrary, with a pale gelatine
; and the sporidia, instead of being opake, and divided
by septa, are pellucid and simple. The form of the perithecia,
too, are more uniformly spherical than in the other groups.
Fig. 1. Portion o f the leaf, with perithecia.
Asci and sporidia ; magnified.
Fig. 2. A perithecium. Fig. 3.
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