#Rust on #Lotus sp., likely caused by #Uromyces euphorbiae-corniculatae or U. anthyllidis s.l., accompanied by #Ampelomyces quisqualis parasitizing #Erysiphe sp., not visible in the photo (El Jem, TN).

Powdery #mildew on dock (#Rumex sp.) caused by #Erysiphe polygoni, here with cleistothecia and conidiophore/conidia of the hyperparasite #Ampelomyces quisqualis (Thiverval-Grignon, FR).

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Powdery #mildew on dock (#Rumex sp.) caused by #Erysiphe polygoni, here with cleistothecia and conidiophore/conidia of the hyperparasite #Ampelomyces quisqualis (Thiverval-Grignon, FR).

x.com/Berglinde2/sta…

Powdery #mildew on common hogweed (#Heracleum sphondylium) caused by #Erysiphe heraclei, here with cleistothecia releasing asci and also a pear-shaped conidiophore of the hyperparasite #Ampelomyces quisqualis (Les Clayes-sous-Bois, FR).

Powdery #mildew on common hogweed (#Heracleum sphondylium) caused by #Erysiphe heraclei, here with cleistothecia releasing asci and also a pear-shaped conidiophore of the hyperparasite #Ampelomyces quisqualis (Les Clayes-sous-Bois, FR).

Nice discovery: #Ampelomyces quisqualis, #hyperparasite of Erysiphaceae, here #Erysiphe cichoracearum on smooth golden fleece (Urospermum dalechampii), Villeneuve-Tolosane, FR; here pycnidia releasing conidia. Considered as biocontrol agent against several powdery #mildew.

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Nice discovery: #Ampelomyces quisqualis, #hyperparasite of Erysiphaceae, here #Erysiphe cichoracearum on smooth golden fleece (Urospermum dalechampii), Villeneuve-Tolosane, FR; here pycnidia releasing conidia. Considered as biocontrol agent against several powdery #mildew.

x.com/wheatpath/stat…

Nice discovery: #Ampelomyces quisqualis, #hyperparasite of Erysiphaceae, here #Erysiphe cichoracearum on smooth golden fleece (Urospermum dalechampii), Villeneuve-Tolosane, FR; here pycnidia releasing conidia. Considered as biocontrol agent against several powdery #mildew.

x.com/wheatpath/stat…