Podosphaera macrospora (Braun) Braun & Kummer, 2008
Tellina grandiflora, Belgium, prov. Antwerp © Carina Van Steenwinkel
another leaf, underside
cleistothecia and asci
mycelium amphigenous, forming persistent greyish white spots. Appressoria rather indistinct. Conidia formed in chains, with fibrosin bodies. Cleistothecia with a single ascus, containing (6-) 8 spores. Appendages in variable number, mostly sub-equatorial, 0.3 – 3 x the diameter; they are myceloid, mostly unbranched, generally entirely brown.
North American species, in Europe only on garden ornamentals.
part of the mycelium had a greyish brown colour, because it was parasitised by Ampelomyces quisqualis.
Ale-Agha, Boyle, Braun ao (2008a), Beenken & Senn-Irlet (2016a), Braun & Cook (2012a), Bresinsky (2016a), Klenke & Scholler (2015a), Kruse (2014a).