Golovinomyces prenanthis Braun, 2012

on Prenanthes

gall

mycelium amphigenous, thin or cobweb-like, greyish to white. Appressoria nipple-shaped to somewhat lobed, mostly single. Conidia elliptic, formed in chains, without fibrosin bodies. Cleistothecia, amphigenous, containing 8-25 asci, each with 2(3) spores. Appendages numerous, equatorial and sub-equatorial, 0.5-2.5 x the diameter; they are mycelioid, mostly simple, septate, initially hyaline, brown ultimately.

hostplants

Asteraceae, monophagous

Prenanthes purpurea.

references

Braun & Cook (2012a), Bresinsky (2016a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a).

mod 5.vi.2018