Podosphaera epilobii (Wallroth) de Bary, 1870
on Epilobium
Epilobium parviflorum, Belgium, prov. Liège, Wasseige © Jean-Yves Baugnée, det. Arthur Vanderweyen
Epilobium hirsutum, Dronten © Arnold Grosscurt
Epilobium hirsutum, Belgium, prov. Antwerp, Veerle, de Roost © Carina Van Steenwinkel
conidia and conidiophore
cleistothecia
ascus
gall
mycelium amphigenous, often also on stems, white, eventually turning brown. Appressoria poorly developed to nipple-shaped. Conidia short-oval, formed in chains, with fibrosin bodies. Cleistothecia with a single ascus, containing (6-)8 spores. Appendages in variable numbers, mostly sub-equatorial, 0.5-5 x the diameter; they are mycelioid, brown, septate, simple.
host plants
Onagraceae, narrowly oligophagous
Chamerion angustifolium; Epilobium alpestre, alsinifolium, anagallidifolium, brunnescens, ciliatum & subsp. glandulosum, collinum, davuricum, fleischeri, parviflorum, hirsutum, lactiflorum, lanceolatum, montanum, nummularifolium, nutans, obscurum, paluste, parviflorum, pedunculare, x persicinum, roseum, tetragonum & subsp. lamyi.
synonyms
Sphaerotheca epilobii (Wallroth) de Bary, 1871.
references
Blumer (1948a, 1967a), Braun (1995a), Braun & Cook (2012a), Bresinsky (2016a), Buhr (1964a), Czerniawska, Madej, Adamska ao (2000a), Dietrich (2013a), Doppelbaur & Doppelbaur (1973a), Ellis & Ellis (1997a), Jage, Klenke & Kummer (2010a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a). Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Leysen (2017a), Mayor (1967a), Mułenko, Sałata & Wołczańska (1995a), Redfern & Shirley (2011a), Roskam (2009a), Ruszkiewicz-Michalska (2006a), Ruszkiewicz-Michalska & Michalski (2005a), Schmid-Heckel (1985a), Scholler, Reinhard & Schubert (1996a), Scholler & Schubert (1993a).