7.08
EXOSPORIÜM Tiliæ.
Linden Exosporinm.
C la ss a n d O k d e b CRYPTOGAMIA FUNGI, Linn— S a t . O e d . EPIPHY TÆ,
Link.
GEN ERIC CHARACTER.
Sporidia cylindrica, olscura, annulata, slromati ghhoso innata, sursum libera,
persistentia.—N e e s .
Sporidia cylindrical, obscure, transversely divided, innate on a globose receptacle,
free upwai-ds, persistent.
S PEC IF IC CHARACTER.
E x o s p o r iu m Tiliæ ; gregarium, atrum, minutum, convexum, sporidiis elongatis,
obtusis subquinque-septatis.
E. gregarious, black, minute, convex, the sporidia elongated, obtuse, about
five times transversely divided.
E x o s p o r iu m Tiliæ, Link, in Berl. Mag. v. 3 . p. 10— Nees, Syst. p. 8 . t. 2 .
f. 30. Holl et Schmidt, Deutschl. Schwaem. No. 43.
H ad. On the dead branches o f different species of Linden (TiUaJ, frequent.
Braid Hermitage, September.
Entire plant about one-third of a line in diameter, rarely larger, very gregarious,
deep black, convex, bursting from beneath the epidermis, and
appearing bristly under a pocket magnifier. Sporidia very crowded,
elongated, obtuse at the apex, spbopaque, divided transversely about
five times, fixed at the base upon a roundish, dark-coloured, solid receptacle,
and there persistent.
Common as this little plant appears to be, I believe it is
here both figured and described for the first time as a native of
this country. The reader, if he has been accustomed to study
these minute productions at all, cannot fail to remark tbe resemblance
between the sporidia of tbis plant and Sporider-
mnim atrum, t. 194. I was uncertain, when I published the
latter, whether to regard the bodies of which it is composed as