Lecidea circumdiluens Nyl.
L. friabilis Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 302 (1941).
Type: New Zealand. Wellington, south side of Wellington Harbour. Colenso 6544, BM!
L. friabilis. Type: New Zealand. Otago, Abbott's Hill Dunedin, on rock. J.S. Thomson (T 977) ZA 3650, CHR 347045!
Thallus whitish, creamish to pale brownish, areolate-cracked, areolae ± subconvex, ± scabrid-roughened, with a thin, black, marginal prothallus. Apothecia scattered, 0.2-0.8 mm diam., sessile, plane to convex, matt, or shining, black, conspicuous, often ± confluent, margins thin, raised, black or pale flesh-coloured, entire to ± crenulate. Epithecium green-black, 8-15 µm thick. Hymenium colourless 21-30 µm tall. Paraphyses dense, straight, apices capitate, greenish-black, 5-6 µm thick. Hypothecium 80-120(-150) µm thick, pale yellowish-brown or olive. Ascospores ellipsoid, 8.3-12.0 × 5.2-6.8 µm.
N: Wellington, on coastal rocks. S: Otago (Abbotts Hill, Dunedin).
Endemic
