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STILBOSPOBA P R o r o s i .
Profuse Stilbospora.
C l a s s a n d O r d e r CRYPTOGAMIA FUNGI, i t n « .—N a t . O r d . EPIPHYTÆ,
Link.
G EN ER IC CHAR.ACTEH.
Sporidia ìiuda, libera, subopaca, ovata vel oblonga, Simplicia aut obscure septata,
in acervos irregulares coacervata.
Sporidia naked, free, subopaque, ovate or oblong, simple or obscurely an-
nulated, forming little irregular heaps.
S P E C IF IC CHARACTER.
S t i l b o s p o r a profusa; acervi majares, sporidiis minutissimis subcequaliter bilo-
culatis.
St . heaps rather large, the sporidia extremely minute, nearly equally
2-celled.
H ab. On Beech and Sycamore bi’anclies (Fagus sylvatica et Acer pseudo-
platanus) ahout Edinburgh, in the spring.
Sporidia nearly equally 2-celled, very minute, extremely copious, exuded
from beneath the epidermis, and forming little, rather conical, intensely
black heaps, 1-2 or more lines in breadth, often confluent, and very
gregarious.
Tlie genus Stilbospora, first constituted, I believe, by
H o f f m a n n , has very few species; it is not therefore difficult
to ascertain those which have been already described, though
the microscope is necessary for that purpose, on account of the
principal character being derived from the nature of the sporidia.
The present species seems to be quite new, and well
distinguished by the minuteness and distinct structure of the
sporidia.
Fig. 1. a, Plants, natural size, b. Plants vertically divided, one being still
within the epidermis, the other having partly escaped, c, S p o r id ia m a g -
nified.