Buellia litoralis Zahlbr.
Lectotype: New Zealand, Otago, Black Head, Dunedin. On coastal rocks. J.S. Thomson ZA441 (T397), CHR 374337!
Thallus pale greyish to yellowish-brown, verrucose-papillate, 0.4-0.5 mm thick, roughened, or matt, areolate-cracked, areolae 0.2-0.4 mm diam., subangular, separated by narrow cracks, bounded at margins by a thin, black, prothallus or ± indeterminate in irregular patches to 1 cm diam., saxicolous. Apothecia sessile, constricted at base, solitary to 1-4-confluent, rounded to irregular through mutual pressure, disc 0.5-1.0 mm diam., black, matt or minutely roughened, epruinose, plane, becoming convex, margin thin, black, persistent. Hypothecium thick, brown-black. Hymenium 75-80 µm tall, colourless. Paraphyses filiform, dense, straight, simple, eseptate, apices capitate, 3 µm thick. Ascospores uniseriate to subbiseriate, ellipsoid, apices rounded or slightly pointed, straight, not constricted at septum, 12.8-16 × 6.4-8 µm.
S: Otago.
Endemic
