Gymnosporangium globosum (Farl.) Farl.

• Region

  North America

• Country

  United States of America

• State/Province

  Ohio

• County/Municipio

  Ottawa Co.

• Locality

  Lakeside

• Coordinates

  41.5431, -82.7491

• Coordinate Uncertainty (m)

  301

• Georeferencing Method

  GEOLocate Web Application. Used GEOLocate Web Application (batch client) to georeference locality with high precision.

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

03010520
ohio~fungT
With Reprint of the Original Descriptions
W. A. Kellerman, Ohio State University
44. Gymnosporangium globosum Farlow.
Roestelia globosa Thaxter.
On Crataegus punctata Jacq.
Lakeside, Ottawa Co., Ohio,	Sept. H 1901.
Coll. W. A. Kellerman.
This name, Roestelia globosa Thaxter, was perhaps first used by Ed.
Fischer, Hedwigia, 34:4, 1895, the description having been published in
1886 as given herewith:—
“Turning next to R. lacerata, there seems to have been a confusion
of forms in this instance also. The material thus named occurring in
America includes at least two, and perhaps three forms; one, ..........
..................................... A second form, lacerata, y in-
fests the leaves of Crataegus, and does not appear until early in August;
while a third and smaller form, lacerata, 2, is found abundantly on Pyrus
malus simultaneously with it.
“In the forms y and z the spores are smaller, about 20 P- in di-
ameter, while the peridial cells are smaller and broader in proportion
to their length, about 20 X 65 fi, with a tendency to a rhomboidal
shape; the ridges are deep and sharply cut as a rule, with the striae
clearly marked and running obliquely in two directions; those above
the median line, where the striae are horizontal, running in a plane nearly
at right angles to those below it. The two forms seem nearly identical
microscopically; the spores and peridial cells of z are perhaps slightly
smaller, but otherwise it differs from y only by its smaller size and faded
yellow color.” Roland Thaxter. Proc. Amer. Acad. Arts & Sci. 14:266.
1886.
03010520