Rhytisma umbonatum
(Hoppe ex Wallr.) Rabenh.
TGM [Darwin] 3552. Place of collection: Georgia; Georgia; Tetritskaro; Manglisi (N41°41' E44°22'). Date of collection: 24 September 1954. Associated organism: Salix purpurea (leaf). Collector: Antschabadze, T.T..