Verrucaria moravica Servit , Stud. Bot. Cech . 9: 95, 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 moravica Servit, Stud. Bot. Cech. 9: 95, 1948

Type.

[Czech Republic,] Moravia, Kopřivnice, Piskovnice, 490 m alt., 1922, Suza (PRM-760594!, syntype).

Description.

Prothallus not seen. Thallus whitish-grey with abundant medium greenish-brown punctae, endolithic, a dark line between contiguous conspecific thalli. Perithecia 0.23-0.35 mm, 3/4-1-immersed, leaving deep pits in the rock, surrounded by a thalline collar; ca. 40-60 perithecia/cm2. Involucrellum apical. Exciple ca. 0.26 mm in diam., wall brown. Ascospores 0-septate, 20-25 × 9-12 mm.

Notes.

Perithecia are mostly over-mature. One perithecium was sectioned. V. moravica may be rather similar to V. subtilis , but differs in the presence of dark lines between contiguous conspecific thalli. In the original description, the spore length was reported to be more variable: 18-28 × 9-12 ( Servít 1948). In V. transfugiens Zschacke, the involucrellum is absent.