19-11-2024 00:36
Pérez del Amo Carlos ManuelHace unos días encontramos numerosos ejemplares d
04-11-2024 17:32
Yves AntoinetteBonjour, je pense qu'il peut s'agir de Trichoderma
12-11-2024 16:43
Ethan CrensonHello all, This weekend a friend found these dark
19-11-2024 08:57
Lothar Krieglsteiner.. on dead stems of indet.dicotyl, maybe Phytolacc
19-11-2024 20:00
Stephen MartinI have found this intriguing fungus which looked l
19-11-2024 14:08
Dragiša SavicHello everyone, some interesting anamorphs. The fi
19-11-2024 17:21
Garcia SusanaHola a todos. Mando este ascomiceto que no consig
18-11-2024 17:56
Bernard DeclercqHello,I am urgently loooking for following paper:P
Erysiphe quercicola on Quercus robur
B Shelbourne,
04-11-2024 22:58
• 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.