Phyllosticta paviae Desm. 1847

In Great Britain and/or Ireland:
Foodplant / saprobe
pseudothecium of Guignardia aesculi is saprobic on dead, fallen, over-wintered leaf of Aesculus hippocastanum
Remarks: season: 5
Other: major host/prey

Foodplant / saprobe
pseudothecium of Guignardia aesculi is saprobic on dead, fallen, over-wintered leaf of Aesculus
Remarks: season: 5

Foodplant / spot causer
epiphyllous, scattered or crowded pycnidium of Phyllosticta coelomycetous anamorph of Guignardia aesculi causes spots on live leaf of Aesculus parviflora
Remarks: season: 7-

Foodplant / saprobe
pseudothecium of Guignardia aesculi is saprobic on dead, fallen, over-wintered leaf of Aesculus glabra
Remarks: season: 5

Phyllosticta paviae Desmaz. Ami. Sci. Nat. III. 8: 32. 1847
Phyllosticta sphaeropsoidea Ellis & Ev. Bull. Torrey Club 10: 97. 1883.
Spots reddish-brown, irregular, often reaching a diameter of several cm. or occasionally covering a large part of the leaf-surface, visible on both sides of the leaf but paler on the under side; pychidia numerous, quite evenly scattered over the infected spot, reaching a diameter of 120 fx; spores subglobose or ovoid, often containing one or two oil-drops, 8-10 X 12*15 a-
Said to be the pycnidial stage of Guignardia Aesculi (Peck) Stewart. (In Phytopathology 6: 9. 1916, it is suggested that Phyllosticta paviaecola Brunaud is also a synonym of this species.)
On Aesculaceae :
Aesculus glabra Willd., Illinois, Indiana, Iowa, Ohio, Pennsylvania.
Aesculus Hippocastanum L., Delaware, District of Columbia, Illinois, Indiana, Maine,
Massachusetts, Michigan, New Jersey, Ohio, Pennsylvania, Wisconsin; Ontario. Aesculus octandra Marsh. (Aesculus jiava Ait.), Iowa. Aesculus pavia L/., Alabama. ' Type locality: Europe, on Pavia macrostachya. Distribution: Maine to Wisconsin and Alabama ; also in Europe.

Phyllosticta aesculicola Sacc. Michelia 1: 134. 1878
Phyllosticta Aesculi Ellis & Martin, Jour. Myc. 2: 130. 1886.
Spots large, indefinite, sometimes covering half the surface of the leaflet, rusty-red on
the upper surface of the leaf, paler below, margin indefinite, gradually blending off into the
healthy tissue of the leaflet; pycnidia few, usually clustered in groups over the discolored
spot, small, reaching a diameter of 40-50 ju; spores ellipsoid, minute, 1-2.5 X 3-5 jt.
On Aesculaceae:
Aesculus glabra Willd., Missouri, Virginia.
Aesculus Pavia L,., Mississippi. Type locality: Europe, on Aesculus Hippocastanum. Distribution: Virginia, Missouri, and Mississippi; also in Europe. .Exsiccati: Ellis & Ev. N. Am. Fungi 1723.