Bacidia leucothalamia (Nyl.) Hellb.
Lecidea leucothalamia Nyl., J. Linn. Soc. Lond. Bot. 9: 255 (1866).
L. leucothalamia var. melachroa Nyl., J. Linn. Soc. Lond. Bot. 9: 255 (1866).
L. permutata Stirton, Proc. phil. Soc. Glasg. 10: 299 (1877).
Lectotype: New Zealand. Otago, Saddle Hill Bush. On bark of dead trees, October 1861. W.L. Lindsay, E!
Lecidea permutata. Lectotype: New Zealand. Near Wellington. J. Buchanan 401, August 1876, 4/76, BM!
Thallus whitish or pale glaucous-grey, olivaceous or buff, granular-roughened or minutely verrucose-cracked, or wrinkled-plicate, in irregular patches, 1-5 cm diam. Apothecia sessile, constricted at base, 0.5-1.0 mm diam., disc pale grey-white to ± blackened, delicately pruinose, minutely roughened, plane or subconcave, margins persistent, entire, raised, black. Hypothecium red-brown to brown-black. Ascospores acicular, 7-septate, (32-)40-50 × 1.7-3.4 µm.
N: Wellington. S: Otago (Dunedin). Apparently lowland and coastal on trees and shrubs. Still imperfectly known.
Endemic
