21-01-2026 16:32
Gernot FriebesHi,I need your help with some black dots on a lich
21-01-2026 16:48
Gernot FriebesHi,after my last unknown hyphomycete on this subst
20-01-2026 17:49
Hardware Tony
I offer this collection as a possibility only as e
15-01-2026 15:55
Lothar Krieglsteiner
this one is especially interesting for me because
17-01-2026 19:35
Arnold BüschlenHallo, ich suche zu Cosmospora aurantiicola Lite
16-01-2026 00:45
Ethan CrensonHi all, On decorticated hardwood from a New York
18-01-2026 12:24
Josep Torres
Hello.An anamorph located on the surface of a thin
Erysiphe quercicola on Quercus robur
B Shelbourne,
04-11-2024 22:58
• Both Erysiphe and Phyllactinia species reported on the host.• Several Erysiphe species with similar chasmothecial appendage morphology.
• This seems to be Erysiphe quercicola, chasmothecial appendages no longer than the diameter of the central body, downy patches amphigenous, and leaves not disfigured.
Habitat: Many leaves of Quercus robur with medium to large downy patches, on both sides of leaves, leaves not deformed, some small brown patches (may not be related), with Acer campestre and Crataegus cf. monogyna, around a hedge between a field and road, part of a large area of agricultural land being 'rewilded' (Knepp Estate), Low Weald, southern England, early November.
Chasmothecia: Apparently amphigenous, gregarious, initially yellow, then orangish, finally blackish.
Low magnification (20-40x): Chasmothecia sub-globose to globose, when mature with shortish appendages protruding from the equator, bases uninflated, apices appearing almost capitate due to a ball of dense branching, conidiophores not observed, some whitish lumps on mycelium.
