Distribution: N - TAA, Lomb, Piem (Isocrono & al. 2004).
Description: Thallus crustose, whitish or yellowish white, thin, often finely granular. Apothecia without a thalline margin (but often covered at the base by a thin thalline layer when young), sessile, strongly constricted at base, 0.7-2.5 mm across, with a strongly concave, reddish-orange to orange-brown disc, and a thick, often inrolled and radially sulcate, paler proper margin. Proper exciple of radiating hyphae, brownish yellow in outer part, colourless within; epithecium colourless to pale reddish brown, often with yellow-brown granules; hymenium colourless, 60-90 µm high, the hymenial gel I+ blue; paraphyses simple to sparingly branched in upper part, 1.5-2 µm thick, the apical cells 2-4 µm wide; hypothecium colourless to pale yellow. Asci 8-spored, cylindrical to elongate-subclavate, thin-walled, without tholus, the wall and the contents I+ blue. Ascospores 3-septate, with parallel septa, hyaline, narrowly ellipsoid, 15-21 X 4-5 µm. Photobiont trentepohlioid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a mainly arctic-alpine, circumpolar species found on slightly calciferous soil rich in humus, and on terricolous bryophytes near or above treeline; probably restricted to the Alps in Italy, where it is generally rare.
Growth form: Crustose
Substrata: soil, terricolous mosses, and plant debris