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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. Aphanopsis. Aphanopsidaceae Printzen & Rambold (1994); family of unknown placement (incertae sedis); Lecanorales.

Taxonomic Literature: Printzen Ch. & Rambold G., Lichenologist 27: 99-103 (1995); Purvis O.W. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain and Ireland, London (1992).

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

Thallus: Crustose, leprose or granular. Upper Surface: Brown, green, or grey; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate; not cephalodiate; not lobulate; without granules or with granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by the whole lower surface; special structures absent.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, becoming adnate to soon sessile. Margin: Indistinct; external filaments absent. Exciple: White or brownish yellow. Periphyses: Absent. Interascal Hyphae: Present, distinctly branched, not or scarcely anastomosed. Hypothecium: Brownish yellow.

Asci: Tholus thickened, amyloid, entirely amyloid throughout or with amyloid tube; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, 25-38 µm long, 13-18 µm wide, obtuse or aciculate; septa absent; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

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