TYPE. BOHEMOSLOVACIA [Czechia] Bohemia sept. Sudetes (Krkonose) : in valle rivi Mumlava prope pagum Harrachov, alt. 800 m. Ad folioa et ramulos Piceae excelsae. 26.VII.1960, A. Vězda s.n. (Hb. Vězda, holotype; GDA, LSU, M, NHMUK, isotypes).
Life form. Lichenized fungus
Description. Thallus grey to green, smooth to granular, often shiny, 0.1-0.5 mm thick. Vegetative diaspores absent. Photobiont chlorococcoid alga. Ascomata biatorine apothecia, rare, 0.15–0.4 mm diam.; disk white to pinkish; rim pale. Exciple well-developed, hyaline; epithecium hyaline; hymenium hyaline, 40–60 µm high, I+ blue; hypothecium hyaline to pale brown. Paraphyses numerous, simple or sparingly branched above, 0.5–1 µm diam. below, widening to ca 2 µm at the tips. Asci clavate, 8-spored, with K/I+ blue apical dome containing a darker blue, tubular ring-structure, and an amyloid coat. Ascospores hyaline, (1-) 3-septate, narrowly fusiform to clavate-fusiform, sometimes slightly curved, 11–16 × 2.5–4.5 µm. Conidiomata pycnidia, 0.1–0.3 mm diam., pinkish white, immersed when the thallus is thick but emergent when it is thin; conidia pyriform, 3–4 × 1.3–1.7 µm.
Chemistry. Spot tests negative; no secondary metabolites detected.
Substrate and habitat. Corticolous on twigs of shrubs and conifers, rarely muscicolous.
Distribution. Europe, eastern North America and eastern Asia; in North Carolina found in the Blue Ridge.
Literature
Cannon, P., Orange, A., Aptroot, A., Sanderson, N., Coppins, B. & Simkin, J. (2022). Lecanorales: Pilocarpaceae, including the genera Aquacidia, Byssoloma, Fellhanera, Fellhaneropsis, Leimonis and Micarea. Revisions of British and Irish Lichens27: 1-48.
Nimis P.L. (2024). ITALIC - The Information System on Italian Lichens. Version 7.0. University of Trieste, Dept. of Biology, (https://dryades.units.it/italic), accessed on 2024-02-14.
Vězda, A. (1961) Lichenes novi vel rariores Sudetorum occidentalium. Preslia (Praha) 33: 365-368 (original description as Bacidia subtilis).