Euoidium helichrysi (Boesewinkel) Braun & Cook, 2012

on Helichrysum

gall

mycelium amphigenous thin, extensive. Appressoria indistinct. Conidia formed in chains, barrel-shaped, without fibrosin bodies. Conidiophore long and slender, foot-cell 150-250 ┬Ám. Cleistothecia unknown.

hostplants

Asteraceae, narrowly oligophagous

Helichrysum arenarium; Xerochrysum bracteatum.

synonyms

Erysiphe helichrysi Braun, 1995 later turned to be a mixture of Euoidium helichrysi and Leveillula helichrysi.

references

Braun & Cook (2012), Klenke & Scholler (2015a).

mod 4.vi.2018