Plant Parasites of Europe

leafminers, galls and fungi

Erysiphe thesii

Erysiphe thesii Junell, 1967

on Thesium

gall

mycelium amphigenous, also on stems and in the inflorescence. Appressoria lobed, single or paired. Conidia solitary, elliptic, without fibrosin bodies. Foot-cell of conidiophore straight. Cleistothecia 80-120 µm with 3-10 asci, containing 3-6 spores. Appendages 5-15, sub-equatorial, 0.5-4 x the diameter; they are stiff and rather straight, septate, unbranched, eventually brown.

host plants

Santalaceae, monophagous

Thesium alpinum, bavarum, dollineri, ebracteatum, linophyllon & subsp. montanum, pyrenaicum.

references

Brandenburger (1985a: 80), Braun (1995a), Braun & Cook (2012a), Bresinsky (2016a), Jage, Klenke & Kummer (2010a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Negrean & Denchev (2000a).

Last modified 5.ix.2019