Studies on Drepanopeziza salicis (Tull.) v. Höhnel,perfect state of Gloeosporium salicis West.

The development of the apothecium of Drepanopeziza salicis– the perfect state of Gloeosporium salicis– following the appearance of the microconidia has been described. The formation of both microconidia, which possibly have a spermatial function of mature ascospores and the incubation period of the ascospore-infection have been related to climatic conditions.