Rhytisma umbonatum
(Hoppe ex Wallr.) Rabenh.
IMI 11126a. Place of collection: Hungary; near Vallombrosa. Associated organisms: Rhytisma salicinum; Salix caprea; Salix purpurea (leaf). Collector: Magocsy-Dietz, A.. Literature: page(s) Kryptogamae Exsiccatae a Mus. Palat. Vindobon. 208a.