Phyllosticta paviae Desmazières, 1847

on Aesculus

Phyllosticta paviae on Aesculus hippocastanum

Aesculus hippocastanum, Hungary, Mosonmagyaróvár, 15.viii.2018 © László Érsek

Phyllosticta paviae on Aesculus hippocastanum

leaf spot, detail

Phyllosticta paviae: pycnidia on Aesculus hippocastanum

numerous pycnidia

Phyllosticta paviae (Guignardia aesculi) on Aesculus hippocastanum

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.

hostplants

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), 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, Brurberg, Herrero, Strømeng & Stensvand (2012a).

mod 9.x.2018