Lecanoromycetes, Lecanoromycetidae, Lecanorales, Lecideaceae
crustose, rimose-areolate-cracked, creamy-orange; medulla I+ or I-; isidia and soredia absent;
apothecia, scattered, innate, rather large, 0.5-1.5(-3) mm diam.; disc dark brown without a distinct true margin. True exciple
± totally escluded. Hymenium
80-150 µm tall, I+ blue; hamathecium
of paraphyses, septate, branched-anastomosing, netted, slightly swollen at apices; epihymenium
pale brown. Hypothecium
upper part (subhymenium) colourless, otherwise dark brown to brown-black, hyphae irregularly arranged. Asci
8-spored, clavate to subcylindrical, Porpidia
simple, typically 22-25 µm long, ± ellipsoid; perispore well-developed, 2-7 µm thick.
pycnidia, often present. Conidiogenous cells elongate, bottle-shaped, in a single layer; conidia
Norstictic or confuentic acids.
mainly on ±inundated, siliceous, rocks.
two species: one from cool-temperate South America, the other from Campbell Island, New Zealand.
Systematic position uncertain.
LITERATURE: Hertel 1984,
Fryday & Thüs 2017