Phyllosticta minima (Berk. & M. A. Curtis) Underw. & Earle 1897

Phyllosticta minima (Berk. & Curt.) Ellis & Ev
N.Am. Phyllost. 1. 1900.
Sphaeropsis minima Berk. & Curt.; Berk. Grevillea 3: 2. 1874. ?Depazea brunnea Berk. & Curt.; Berk. Grevillea 4: 155. 1876. Phyllosticta acericola Cooke & Ellis, Grevillea 8:11. 1879.
Spots circular or subcircular in form, rarely exceeding a diameter of 5 mm. and often much smaller, at maturity consisting of a yellowish central portion bounded by a reddish or purplish border, the whole having a decidedly eye-like appearance, the color of the outer border often changing to dark-brown in dried specimens; pycnidia numerous and usually distributed rather evenly over the entire spot, visible on both sides of the leaf but more prominent on the upper surface and apparently opening upward but occasionally opening downward, reaching a diameter of 100-125 /*, the ostiolum fairly prominent; spores ellipsoid with the ends blunt, usually about 2 X 6 m but occasionally reaching a length of 10 ju.
On Aceraceae:
Acer rubrum L., Alabama, Florida, Louisiana, New Jersey, New York, Pennsylvania;
Ontario,
Acer saccharinum L. {Acer dasycarpum Ehrh.), Kansas, Missouri, Nebraska, New Jersey,
Wisconsin. Acer spicatum Lam., Wisconsin. Type locality : New England, on Acer rubrum.
Distribution: Ontario to Florida, and westward to Nebraska and Louisiana.