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.