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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Ancistroporella. Synonyms: Ancistrospora G. Thor (1990); genus of unknown placement (incertae sedis); Arthoniales.

Taxonomic Literature: Thor G., Opera Bot. 103: 1-92 (1990) - sub Ancistosporella; Thor G., Systema Ascomycetum 13(2): 181-182 (1994).

Lichen Photobionts: Primary photobiont present; trentepohlioid. Secondary photobiont absent.

Thallus: Crustose, leprose or granular. Thallus Outline: Soon disappearing or persistent. Upper Surface: Green or grey; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent or present:; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular or linear, forming all across the thallus surface. Margin: Prominent. Exciple: Black or brown. Epithecium: Apical cells brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Black or brown.

Asci: Tholus thickened, amyloid, with amyloid tube; dehiscence bitunicate; exoascus not amyloid, hemiamyloid.

Ascospores: c. 8 per ascus, semilunate, 28-38 µm long, 3 µm wide, obtuse or aciculate; septa present; transversally septate, 3-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Secondary Metabolites: Not detected or present, of the following substance class(es): orcinol depsides.

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