Verrucaria euboensis Servit , Stud. Bot. Cech . 9: 83, 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 euboensis Servit, Stud. Bot. Cech. 9: 83, 1948

Type.

[Greece,] Euboea: Berg Xerowuni, ca. 1100 m alt., 1931, Rechinger (PRM-858655!, isotype).

Description.

Prothallus not seen. Thallus white to whitish-grey, endolithic. Perithecia 0.2-0.35 mm, 3/4-1-immersed, leaving deep pits in the rock. Involucrellum covering half of the exciple, ca. 100 mm thick, appressed to the exciple. Exciple ca. 0.35-0.45 mm in diam., wall black. Periphysoids ca. 40-50 × 2-2.5 mm. Ascospores 0-septate, 25-30 × 12-16 mm.

Notes.

The species may be conspecific with V. viridula , but the thallus is endolithic.