Flora of New Zealand Series

≡Verrucaria baldensis A.Massal., Ric. Lich. Crost.: 173 (1852).

Description : Flora (1985: 606 – as Verrucaria baldensis). See also McCarthy (2001j: 181).

N: South Auckland (Pio Pio). S: Nelson (Mt Arthur), Canterbury (Weka Pass, Castle Hill, Mt Somers), Otago (Maheno), Southland (Clifden). Known also from temperate regions of the Northern Hemisphere and Australia (Purvis et al. 1992; Nimis 1993; Santesson 1993; Wirth 1995; Llimona & Hladun 2001; McCarthy 2001j, 2003c; Nimis & Martellos 2003; Halda 2003; Santesson et al. 2004).

Cosmopolitan

Illustrations : Dobson (1992: 355, 356; 2000: 405; 2005: 454); Foucard (1990: 280); Malcolm & Galloway (1997: 122); Malcolm & Malcolm (2000: 110); Purvis (2000: 43); McCarthy (2001j: 180, fig. 49) – as Verrucaria baldensis.

Bagliettoa baldensis is an obligate calcicole with a scurfy, grey-white endolithic thallus sometimes delimited by a thin, black prothalline line; scattered, minute, black perithecia, 0.2–0.3(–0.4) mm diam.; a lid-like and radially fissured involucrellum, resembling a hot cross bun, and which is characteristic of the species; and ellipsoidal ascospores, 15–21 × 8–10 μm.