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E U R O T IU M R o s a r u m ,
Rose-branch Eurotium.
S P E C IF IC CHARACTEII.
E u r o t iu m Rosarum; ciespitosumj peridiis gregariis, viridescentibus Jhccis tec.
tis; Jhccis ehngatis, simplicibus profusis, medio ascendentibus.
E. tu fte d ; the peridia gregarious, greenish, covered by the fiiaments; ffla-
ments elongated, simple, profuse, somewhat erect in the centre.
H a s . On the branches, petiols and capsules of living plants o f various spe-
cies of Rose. Summer, extremely frequent about Edinburgh.
Tujis from a line to a quarter o f an inch broad, sometimes confluent, depressed,
silky, creeping at the margin, white, a t length tinged with
brown in the centre. Peridia greenish, sessile, globose, numerous, very
minute. Filaments numerous, enveloping the peridia, and rising above
them, simple, elongated, jointed.
A new species, having much of the habit of a Mucor, or
rather of a Sporotrichum. The genus, however, is very satisfactorily
ascertained by microscopical investigation. Its growth
is rapid, and it speedily extends itself when once in possession
of a rose-bush.
Fig. 2. a, Eurotium Rosarum, nat. size, b, Part o f a tuft, magnified, c,
Peridia and filaments separated, d, Peridia opened.
f -