Flora of New Zealand Series

≡Lecidea subbadioatra C.Knight, Trans. N. Z. Inst. 8: 317 (1876). Trans. Linn. Soc. ser. 2, Bot. 1: 276 (1877).

Lectotype: New Zealand. Sine loco [probably Wellington], Charles Knight – BM [fide Galloway (1985a: 53)]. Isolectotype – WELT.

Description : Flora (1985: 52–53).

N: Known only from the type collection.

Endemic

Illustrations : Knight (1876: pl. X, fig. 9; 1877: pl. XXXVII, fig. 10 – as Lecidea subbadioatra).

Buellia subbadioatra is characterised by: the saxicolous habit; the grey-white to fawnish or greyish, smooth, waxy to areolate thallus delimited by a thin, black prothalline line; scattered, black, marginate, epruinose apothecia, 0.1–0.4 mm diam.; a pale-brown hypothallus; and ellipsoid–oval to fabiform ascospores, constricted at septum, 25 × 1 μm.