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

tests the ieaves of Cratw	™ HI early in August;
NEW YORK BOTANICAL GARDEN ^
I	0301052-	*
OHIO FUNGI
With Reprint of the Original Descriptions
W. A. Kellerma.n, Ohio State University
44. Gym nosporangium globosum Farlow.
Roestelia globosa Thaxter.
On Crataegus punctata Jacq.
Lakeside, Ottawa Co., Ohio,	Sept. 11, 1901.
Coll. W. A. Kellerman.
This name, Roestelia globosa Thaxter, was perhaps first used by Ed.
I Fischer, Hedwigia, 34 : 4, 1895, the description having been published in
1886 as given herewith:—
“Turning next to R. lace rat a, 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, s, is found abundantly on Pyrus
tnalus simultaneously with it.
“In the forms y and z the spores are smaller, about 20 M in di-
I 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.