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Data Set Maintenance: Data set standard item. Data set author(s): Marbach B. (00-05-11). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 2. Endohyalina. Synonyms: Buellia; Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Taxonomic Literature: Taxonomic notes: Main characteristic: hyalin layers in the excipulum. Marbach B. Corticole/lignicole Arten der Flechtengattung Buellia. - Bibl. Lichenol. 74: 1-384 (2000).

Thallus: Crustose, not subdivided parts. Thallus Outline: Soon disappearing. Upper Surface: Grey; special structures absent; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Not attached, thallus vagrant; special structures absent; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, becoming adnate to soon sessile. Margin: Distinct; external filaments absent. Exciple: Black (black with hyalin layers), brown, or white. Periphyses: Absent. Epithecium: Apical cells brown or brownish yellow. Hymenium: Iodine reaction: Lugol’s positive. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Black or brown.

Asci: Tholus thickened, amyloid, with non-amyloid narrow axial body and amyloid convergent flanks towards apex; ocular chamber broad; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, 10-12-15 µm long, 4-4.5-5 µm wide, obtuse; septa present; transversally septate, 1-transversally septate, formed by the proper spore wall; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, not constricted where the septum meets the spore wall, middle brown, in Lugol's Solution negative, wall not ornamented.

Secondary Metabolites: Present, of the following substance class(es): ß-orcinol depsides.

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