TYPE. UNITED STATES. CALIFORNIA, Bolander s.n. (US 00068011, isotype).

Description. Life form: lichenized fungus.

Thallus crustose, white, granular. Photobiont trebouxoid alga. Ascomata lecideine apothecia, adnate to sessile, 0.2-0.6 mm; disk black, convex; margin thin to disappearing. Epithecium brown; hymenium hyaline, not inspersed, 50-65 µm high; paraphyses agglutinate, branched, tips swollen and brown; hypothecium dark red-brown, not extending into a stipe. Asci clavate, 8-spored. Ascospores brown, 2-celled, fusiform-ellipsoid, often curved, 19-30 × 7-11 µm. Pycnidia not reported.

Chemistry. Thallus K+ yellow, PD+ yellow-deep orange; hymenium I+ deep blue.

Substrate and Habitat. Corticolous and lignicolous on conifers in forests.

Distribution. North America; in North Carolina found in the Blue Ridge ecoregion.

Literature

Fink, B. (1935) The Lichen Flora of the United States. University of Michigan Press, Ann Arbor. 426 pp (description as Buellia dialyta).

Imshaug, H.A. (1951) The Lichen-forming Species of the Genus Buellia in the United States and Canada. University Microfilms. Ann Arbor, Michigan. Publication No. 2607. vi + 217 pp (description as Buellia dialyta).

Nylander, W. (1869) Lichenes in Brasilia a cl. Glaziou collecti. Flora (Regensburg) 52: 117-126 (original description as Lecidea dialyta).