Flora of New Zealand Series

Thallus rosette-forming to ± irregularly spreading 2-4(-8)cm diam., closely attached. Lobes thick, variable, 2-5 mm wide and to 8-10 mm long, margins plicate-radiating or minutely lobulate, slightly thickened below. Upper surface ± convex to plane, minutely wrinkled-verrucose or plicate-uneven, olive brownish or dark olive-greenish or blackened, suffused ochre-reddish at margins, becoming ± uniform yellow-red on storage, smooth, coriaceous to ± scabrid, lumpy. Lower surface corticate, pale whitish-buff in a narrow, marginal zone, dark red-brown or blackened centrally, attached to substrate by frequent, short, black or brown-black rhizines or tomentum. Cephalodia brown or bluish- brown smooth, flattened, oblong-irregular, at margins and between lobes, 1-2 mm diam. Apothecia scattered to crowded, round to irregular through mutual pressure, 0.5-4.5 mm diam., sessile, constricted at base, disc subconcave to plane, often undulate-irregular, dark red-brown to brown-black, matt, minutely roughened, epruinose, margins persistent, thick, concolorous with thallus, entire, crenulate-striate, exciple smooth or minutely warted and ± tomentose. Epithecium olive-brown, 17-20 µm thick. Hymenium pale brownish-straw, 100-180 µm tall. Hypothecium straw-yellow, 100 µm thick. Paraphyses 2 µm thick, capitate at apices, to 5-8 µm thick. Asci cylindrical. Ascospores mainly uniseriate, oval-ellipsoid, slightly apiculate at one or both ends, 20-26(-31) × 12-15(-17) µm, wall warted-uneven, 2-5 µm thick.

S: Southland, Fiordland (Secretary I., Doubtful Sound, Dusky Sound). St: (Mt Anglem, Mt Allen). On soil among mosses in wet, exposed alpine or subalpine grasslands.

Austral