Verrucaria periphysata Zahlbr., Oesterr . Bot. Zeitschrift 68: 67, 1919

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 periphysata Zahlbr., Oesterr. Bot. Zeitschrift 68: 67, 1919

Type.

[Croatia] Dalmatien: Schlossruine Vrlika a.d. … Granuga, an Kalk … c. 550 m, 5.7.1911, J. Baumgartner 4250 (W-4250!).

Description.

Prothallus not seen. Thallus endolithic, grey. Perithecia 0.15-0.34 mm, immersed, leaving deep pits in the rock; ca. 100-130 perithecia/cm2. Involucrellum absent. Exciple ca. 0.35-0.5 mm in diam., longer than wide, often pear-shaped, apex thickened, wall black. Periphysoids ca. 50-80 × 2 mm. Ascospores 0-septate, 26-35 × 12-14 mm.

Notes.

Material similar to V. periphysata has not been observed in Finland. The exciple of the species is larger than in V. foveolata (0.2-0.4 mm in diam.). The periphysoids may also be longer.