Phyllactinia roboris (Gachet) Blumer, 1933
Fungi, Ascomycota, Leotiomycetes, Erysiphales, Erysiphaceae
onCastanea, Quercus
gall
mycelium hypophyllous, inconspicuous, evanescent. Conidia single, clavate, without fibrosin bodies. Conidiophores erect, filiform. Cleistothecia hypophyllous with an equatorial circle of 4-18 stiff, acicular appendages that are abruptly swollen at their base, their length is variable, but never longer than then the diameter of the cleistothecium; their tips are sub-obtuse. Asci 15-40, 2-spored.
hostplants
Fagaceae, oligophagous
Castanea crenata, mollissima; Quercus macranthera, petraea, pubescens, pyrenaica, robur, rubra.
references
Brandenburger (1985a: 63), Braun (1995a), Braun & Cook (2012a), Dynowska, Fiedorowicz & Kubiak (1999a, Klenke & Scholler (2015a).
02/04/2017