Thelidium maurospilum
≡Verrucaria maurospila Nyl., Lich. Nov. Zel.: 134 (1888).
Holotype: New Zealand. Westland, Greymouth, Richard Helms – H-NYL.
Description : Flora (1985: 571).
S: Westland. Known only from the type collection.
Endemic
Thelidium maurospilum is characterised by: the saxicolous habit; the thin, black thallus; minute perithecia (0.1 mm diam.); and oblong, 3-septate ascospores, 12–14 × 5.6 μm.