Phyllosticta sphaeropsoidea Ellis & Everhart, 1883
aesculus, guignardia, leaf botch
on Aesculus
Aesculus hippocastanum, Hungary, Mosonmagyaróvár, 15.viii.2018 © László Érsek
leaf spot, detail
numerous pycnidia

Aesculus hippocastanum, Engeland, SW Yorkshire, VC 63 © Malcolm Storey, bioImages
parasite
Leaf spots with epiphyllous pycnidia. Conidia 9-13 x 10-20 µm, with a gelatinous mantle and an apical, 6-8 µm long, tongue-shaped appendage.
host plants
Sapindaceae, monophagous
Aesculus × carnea, flava, hippocastanum, × neglecta, parviflora, pavia, turbinata.
synonyms
Botryosphaeria aesculi (Peck) Barr, 1972, Guignardia aesculi (Peck) Stewart, 1916; ? Phyllosticta paviae
references
Brandenburger (1985a: 364), Scheuer & Bechter (2012a), Jage, Kruse, Kummer, ao (2013a), Pastirčáková, Pastirčák, Celar & Shin (2009a), Talgø, Spies Perminow, Sletten ao (2012a), Wikee, Udayanga, Crous, ao (2011a).