Ochrolechia pallescens (L.) A.Massal.
Lichen pallescens L., Sp. Pl.: 1142 (1753).
Lecidea implicata Stirton, Rep. Trans. Glasgow Soc. Fld Nat. 1: 19 (1873).
Lecidea implicata. Type: New Zealand. ?Wellington. J. Buchanan, - not seen.
Thallus whitish or cream, rarely greyish, to 0.5 mm thick, continuous, wrinkled, diffract-areolate, irregularly warted or granular, warts swollen, in orbicular patches 3-6(-10) cm diam., corticolous. Apothecia sessile, 2-3 mm wide, round to irregular, disc concave to plane, scabrid, densely white-pruinose, pinkish-yellow or buff-coloured beneath pruina, margins white, 0.4-0.5 mm thick, entire, swollen. Ascospores 6-8 per ascus, ovoid, 49-58 × 25-30 µm. Chemistry: Cortex K-, C-, KC-, Pd-. Disc K-, C+ rose, KC+ red, Pd-. Gyrophoric acid.
N: Northland to Wellington. S: Nelson to Southland. St: A characteristic species, especially from the bark of Nothofagus at forest margins.
Cosmopolitan
