Flora of New Zealand Series

≡Arthopyrenia carinthiaca J.Steiner, Öst. Bot. Z. 63: 335 (1913).

Description : Thallus crustose, continuous to very sparingly rimose, matt, smooth, pale grey-green to pale fawnish green, 40–80 μm thick. Perithecia flat-hemispherical to subconical, greyish black to black, 0.18–0.27 mm diam., partly overgrown by thallus. Exciple hyaline. Centrum 0.1–0.15 mm diam. Pseudoparaphyses branched-anastomosing, particularly near ostiole. Asci fissitunicate, 8-spored, clavate-cylindrical to cylindrical, 38–50 × 10–17 μm. Ascospores 1-septate, ovate to ellipsoidal, usually anisolocular, 9–15 × 4.5– 6.5 μm.

S: Otago (Trotter's Gorge) on greywacke stones at edge of stream. C: First collected from New Zealand by Peter Johnson (McCarthy & Johnson 1995). Known also from central and northern Europe, the northern US, Taiwan, and from Queensland and Tasmania in Australia (McCarthy 1995g, 2003c; Aptroot 2003a). Notes on the type collection are provided by Swinscow (1967: 416–417).

Cosmopolitan

Anisomeridium carinthiacum is characterised by: the saxicolous habit; the grey-green to fawnish green, continuous to sparingly cracked thallus; scattered flat-hemispherical to subconical peritheca (partly overgrown by thalline tissue); and ovate to ellipsoidal, anisolocular ascospores, 9–15 × 4.5–6.5 μm.