Lecidea allanii Zahlbr.
Type: New Zealand. North Auckland, Rangitoto I. On lava. H.H. Allan 90, 22.8.1933.
Thallus dingy whitish-cream or pale fawnish, 0.2 mm thick, ± areolate-cracked, areolate convex, verrucose or plicate-rugose, forming irregular or spreading patches, 1-3 cm diam. Apothecia scattered, solitary, sessile, constricted at base, 0.2-0.8 mm diam., plane, rarely subconvex, disc black, matt, epruinose, margins narrow, persistent, entire, pale, translucent, pinkish-white when wet or pale red-brown, concolorous with thallus when dry. Epithecium greenish-black, 5-9 µm thick. Hymenium colourless, 40-60 µm tall. Hypothecium to 30 µm thick, pale yellow-brown. Ascospores oval-ellipsoid, straight, apices rounded, 10.2-13.6 × 5.1-6.8 µm.
N: Known only from the type collection.
Endemic
