Verrucaria bavarica Servit , Stud. Bot. Cech . 9: 73, 1948

Pykaelae, Juha, Kantelinen, Annina & Myllys, Leena, 2020, Taxonomy of Verrucaria species characterised by large spores, perithecia leaving pits in the rock and a pale thin thallus in Finland, MycoKeys 72, pp. 43-92 : 43

Verrucaria bavarica Servit, Stud. Bot. Cech. 9: 73, 1948

Type.

[Germany,] Alg. Alpen, Britzelmeyer (PRM-858488!, holotype?).

Description.

Prothallus not seen. Thallus whitish grey, endolithic. Perithecia 0.22-0.36 mm, 3/4-1-immersed, leaving deep pits in the rock. Involucrellum apical, ca. 60 mm thick, appressed to the exciple. Exciple ca. 0.24 mm in diam., wall dark. Ascospores 0-septate, 23-31 × 11-13 mm.

Notes.

The specimen is small and only one perithecium was dissected. Our spore measurements match well with the original description (26-32 × 10-12(-14) mm, according to Servít 1948), as well as the values given by Breuss (26-32 × 10-13 mm, according to Breuss 2016). According to Servít (1948), the size of the exciple is 0.4 mm. Verrucaria bavarica is morphologically close to V. cavernarum and V. subtilis , but may differ in having a larger exciple (which was not confirmed due to the very small size of the specimen) and slightly larger spores.