Phyllactinia alnicola Braun, 2012
onAlnus
Alnus incana, Belgium, prov. Antwerp, Mol, Klein Verkallen © Carina Van Steenwinkel
same leaf, underside
detail with clestothecia
on top of the cleistothecia the gelatinous cushion is visible that is formed by the penicillate cells
cleistothecium with two-spored asci
penicillate cells
gall
mycelium hypophyllous, weak, effuse (also internal). Conidia single, clavate, without fibrosin bodies, on a long conidiophore. Cleistothecia with 15-30 asci, with two spores. Appendages 6-15, equatorial, 1-2.5 the diamter; they are acicular, stiff, with a bulbous swelling at their base.
hostplants
Betulaceae, monophagous
Alnus cordata, glutinosa, incana & subsp. rugosa, x pubescens, viridis.
references
Braun & Cook (2012a), Bresinsky (2016a), Klenke & Scholler (2015a).
19/04/2017
mod 15.vii.2017