Verrucaria reculetensis Servit , Stud. Bot. Cech . 11(3): 103, 1950

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 reculetensis Servit, Stud. Bot. Cech. 11(3): 103, 1950

Type.

[France] Reculet, Jan. 1855, J. Müller (M-0220250!, holotype).

Description.

Prothallus not seen. Thallus pale brown, epilithic, thin, continuous. Perithecia 0.38-0.55 mm, 1/2-3/4-immersed, leaving deep pits in the rock; ca. 30-40 perithecia/cm2. Ostiole tiny, inconspicuous, dark, plane, often surrounded by a projecting neck up to ca. 150 mm wide. Involucrellum absent. Exciple ca. 0.38-0.45 mm in diam., wall dark, ca. 30-40 mm thick, apex thickened to 70-100 mm thick. Periphysoids ca. 50-60 × 1.5-2 mm, branched-anastomosing. Ascospores 0-septate, 25-30 × 13-16 mm.

Notes.

The species is rather similar to V. foveolata , but may differ by slightly larger perithecia and an epilithic pale brown thallus.