Verrucaria montenegrina Servit , Stud. Bot. Cech . 9: 94, 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 montenegrina Servit, Stud. Bot. Cech. 9: 94, 1948

Type.

[Montenegro,] Lovcen, Veterni mlin, 1400 m, 1929, M. Servít (PRM-859152!, holotype).

Description.

Prothallus not seen. Thallus grey with frequent tiny brown flecks, endolithic. Perithecia 0.18-0.26 mm, 3/4(-1)-immersed, leaving deep pits in the rock; ca. 60-80 perithecia/cm2. Involucrellum reaching the exciple base or enveloping the exciple, in the latter case diffusely pigmented under the exciple, ca. 70-110 mm thick, appressed to the exciple. Exciple ca. 0.20-0.22 mm in diam., wall dark. Periphysoids ca. 20-25 × 2.5-3 mm. Ascospores 0-septate (only few seen), 20-25 × 11-14 mm.

Notes.

The species differs from the species of the V. subtilis complex by thicker involucrellum and shorter spores. Verrucaria samosensis Servít has thinner involucrellum and shorter spores.