Aecidium clematidis de Candolle, 1805
on Clematis

Clematis, France, Meaux, Congis © catherine Abdulqawi

Clematis vitalba, Hungary, Mosonmagyaróvár, 8.viii.2017 © László Érsek

galled leaves, undersides

aecia

spermogonia

8.viii.2017: old galls

Clematis vitalba, Belgium, prov. West Flanders, De Panne, Westhoek, 30.vi.2018 © Stéphane Claerebout

same leaf, underside

detail of the gall, with aecia
Clematis vitalba, Belgium, prov. Namur, Jemelle © Jean-Yves Baugnée
underside
Clematis vitalba France, Rhône-Alpes, Haute-Savoie, St. Pierre d’Entremont: here the gall bulges downwards © Arnold Grosscurt

Clematis vitalba, Italië, Aosta, Bellon, 1200 m, 28.vii.2018 © Cor Zonneveld: aecia may also develop on the stems.
gall
aecia yellow, on yellowed and galled spots.
hostplants
Ranunculaceae, monophagous
Clematis cirrhosa, recta, vitalba.
notes
check here about the the genus Aecidium.
references
Klenke & Scholler (2015a), Porta-Puglia & Mifsud (2006a), Roldan Garrigós & Honrubia García (1992a), Wołczańska (2008a).