Erysiphe hyperici (Wallroth) Blumer, 1933

on Hypericum

Erysiphe hyperici on Hypericum spec.

Hypericum, Belgium, prov. Limburg, Bree, de Luysen © Carina Van Steenwinkel

Erysiphe hyperici on Hypericum perforatum

Hypericum perforatum, Belgium, prov. Antwerp, Mol, de Maat © Carina Van Steenwinkel

Erysiphe hyperici: appressorium

appressorium

Erysiphe hyperici: conidiophore

conidiophore

Erysiphe hyperici with Ampelomyces quisqualis

parasitation by Ampelomyces quisqualis

gall

mycelium amphigenous, white. Appressoria lobed. Conidia solitary, without fibrosin bodies, elliptic. Cleistothecia with 5-8 asci, containing 3-5 spores. Appendages numerous, equatorial, 2-8 x the diameter; not mycelioid, flexuous, radially spread, no septa or a few near the base, hyaline of faintly pigmented near the base; in most the the tips are simple, but in a minority the tip is forked once or twice.

hostplants

Hypericaceae, monophagous

Hypericum aegypticum, annulatum, atomarium, barbatum, calycinum, x desetangsii, elegans, hirsutum, humifusum, kotschyanum, lanuginosum, linarioides, maculatum, montanum, olympicum, perforatum, polyphyllum, przewalskii, richeri, tetrapterum, xylosteifolium.

synonyms

Microsphaera hypericacearum Braun, 1981.

references

Braun & Cook (2012a), Bresinsky (2016a), Czerniawska (2001a), Doppelbaur & Doppelbaur (1973a), Dynowska, Fiedorowicz & Kubiak (1999a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a), Mułenko, Sałata & Wołczańska (1995a), Piątek (2004a), Ruszkiewicz-Michalska (2006a), Schmid-Heckel (1985a).

19/04/2017

pub 25.v.2017 · mod 17.vii.2017