Erysiphe grossulariae (Wallroth) de Bary, 1870

on Ribes

gall

mycelium amphigenous, thin, white, sometimes ± persistent, not causing malformations. Appressoria lobed. Conidia formed one by one, without fibrosin bodies, elliptic. Foot-cell of conidiophore cylindric. Cleistothecia with 3-8 asci, containing 3-5 spores. Appendages 8-15, equatorial, 1-1.5 the diameter; they are stiff, unbranched, not or only basally septate, hyaline; apices several times forked in quick succession.

hostplants

Grossulariaceae, monophagous

Ribes alpinum, americanum, nigrum, rotundifolium, rubrum, sanguineum, spicatum, uva-crispa.

synonyms

Microsphaera grossulariae (Wallroth) Léveillé, 1851.

references

Braun (1995a), Braun & Cook (2012a), Bresinsky (2016a), Jage, Klenke & Kummer (2010a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Ruszkiewicz-Michalska (2006a).