Pseudodidymella fagi Wei, Harada & Katumoto,1997

on Fagaceae

parasite

Amphigenous, brown, necrotic leaf spots, bordered by a sharp blackish brown line, mainly on younger trees and ond the lower branches. On the spots several white globules, 0.2-0.3 mm in diameter, densely covered by stiff, extending, ± 0.1 mm long septate hyphae. The globules function as asexual dispersal agents; sexual organs are formed in the winter, on the fallen foliage.

host plants

Fagaceae, oligophagous

Fagus orientalis, sylvativa; Quercus petraea.

Mainly on beech; rarely also on Castanea sativa.

references

Cech & Wiener (0000a), Czachura, Owczarek‐Kościelniak & Piątek (2019a), Ogris, Brglez & Piškur (2019a).

mod 10.ix.2019