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SEPTARIA Ü1MI.
Elm-leaf Septaria.
C l a s s a n d O r d e r CRYPTOGAMIA FUNGI, Linn— S ax. O r d . H YPOX YLA ,
De Cand. Grev.
GEN ERIC CHARACTER.
Sphoerulæ suhstantia foliorum immersoe. Sporidia cylindrica, pellucida, septata,
sub forma cirrhi erumpentia.
Spherules immersed in the substance of leaves. Sporidia cylindrical, pellucid,
jointed, escaping in the form of tendrils.
S PE C IF IC CHARACTER.
Septaria U lm i; sphoerulæ aggregatæ; sporidiis 3-4-septatis; cirrhis soepe
demum effusis.
S. spherules aggregated; sporidia three or four times divided; the cirrhi
often becoming effused.
Septaria Ulmi, Fries, Novit. Fl. Suec. Y .—Kunze, Mykol. Hefte, 2. p. 107-
F usidium septatum, Schm. et Kunze, Deutschl. Schwaem. 8. No. 182.
Sphær ia ulmicola, Bernardi, Stirp. rar. Sicil. Manip. 3. p. 14.
Stilbospora? Uredo, De Cand. Fl. Franç. v. 6. p. 152.
Hab. On dead leaves of various species of Elm, (Ulmus.) Autumn. Near
Lockerbie, Sir W illiam J ardine, Bart.
Plant, having at first sight, and to the naked eye, the appearance o f small,
irregular, blackish, diseased spots, frequently running into each other,
and often partly covered with an effused whitish substance. Spherules
very minute, black, aggregated, immersed in the substance of the leaf,
slightly prominent, and surrounded on the surface by a dark-coloured
body, which is either a modification of a receptacle or an altered state of
the epidermis, probably the former. Sporidia cylindrical, slightly curved,
obtuse at each extremity, divided by 3-4 dissepiments, mixed with a
white gelatinous substance, the whole escaping in the form of irregular
short tendrils; often, however, becoming effused immediately after issuing
from the spherule.
A lm o st every botanist who has had occasion to describe this
plant, has bestowed upon it a different name, and referred
i t to a different genus. F r ie s at len g th , by forming a new
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