Aesculus hippocastanum, Engeland, SW Yorkshire, VC 63 © Malcolm Storey, bioImages

gall

During all summer numerous pycnidia are present as small, black, epiphyllous dots; the conidia that are formed there disperse the infestation further. During the winter perithecia develop in the fallen leaves; ascospores are formed there.

host plants

Sapindaceae, monophagous

Aesculus × carnea, flava, hippocastanum, × neglecta, parviflora, pavia, turbinata.

synonyms

Asteromella aesculicola (Saccardo) Petrak, 1956; Guignardia aesculi (Peck) Stewart, 1916; Phyllosticta sphaeropsoidea (Ellis & Everhart) Petrak, 1956.

references

Brandenburger (1985a: 364), Braggion (2013a), Jage, Kruse, Kummer ao (2013a), Mułenko, Piątek, Wołczańska ao (2010a), Pastirčáková, Pastirčák, Celar & Shin (2009a), Ruszkiewicz-Michalska (2006a, 2016a), Scheuer & Bechter (2012a), Talgø, Spies Perminow, Sletten ao (2012a), Wikee, Udayanga, Crous, ao (2011a).