Monilinia johnsonii (Ellis & Everhart) Honey, 1936

on Crataegus

Monilinia johnsonii: leaf spots on Crataegus monogyna

Crataegus monogyna, Amstelveen, Schinkelbos

Monilinia johnsonii: leaf spot

Crataegus monogyna, Well (Li): leaf spot, with a group of conidiophores in the centre

Monilinia johnsonii: conidiophores

detail

gall

The anamorph (conidial stage) makes leaf spots. On the upperside or underside these have a small greyish colony of conidiophores. The teleomorh (sexual stage) makes small stalked, cupulate mushrooms on fallen, dried, fruits.

host plants

Rosaceae, monophagous

Crataegus monogyna.

synonyms

Monilia crataegi Diedicke, 1904 (name of the anamorph)

references

Brandenburger (1985a), Ellis & Ellis (1997a), Ruszkiewicz-Michalska (2006a).

mod 16.viii.2019