Podosphaera fugax (Penzig & Saccardo) Braun & Takamatsu, 2000
on Geranium

Geranium cf. molle, Nieuwendam

conidia with fibrosin bodies

conidia chain

foot cell of a conidia chain
gall
mycelium amphigenous, often also on stems an then forming a persistent white film. Conidia formed in chains, with fibrosin bodies. Cleistothecia (rarely present) with a single ascus, containing usually eight spores. Appendages fairly numerous, originating at the basal half of the cleistothecium, 1-5 x the diameter, mycelioïd, flaccid, septate, mostly unbranched.
host plants
Geraniaceae, monophagous
Geranium collinum, columbinum, dissectum, divaricatum, macrorrhizum, molle, palustre, phaeum, pratense, pseudosibiricum, pusillum, pyrenaicum, robertianum, rotundifolium, sanguineum, sylvaticum, tuberosum, wilfordii.
synonyms
Sphaerotheca fugax Penzig & Saccardo, 1884.
references
Blumer (1946a), Buhr (1964b), Braun (1995a), Braun & Cook (2012a), Bresinsky (2016a), Czerniawska (2001a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Leysen (2017a), Ludwig (1974a), Ruszkiewicz (2000a), Ruszkiewicz-Michalska (2006a), Ruszkiewicz-Michalska & Michalski (2005a), Scholler, Reinhard & Schubert (1996a).