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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. Psathyrophlyctis. Phlyctidaceae Poelt & Vezda ex J.C. David & D. Hawksw. (1991); of unknown placement (incertae sedis).

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

Thallus: Crustose, granular. Upper Surface: Green or olive; special structures present:; not pseudocyphellate; eciliate; without hairs; not isidate; sorediate; not cephalodiate; not lobulate; without 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. Margin: External filaments absent. Exciple: Brownish yellow. Periphyses: Absent. Epithecium: Apical cells brownish yellow. Interascal Hyphae: Present. Hypothecium: Brown.

Ascospores: 1–2 per ascus, 35-45 µm long, 17-18.5 µm wide, obtuse; septa present; both transversally and longitudinally; wall not thickened at the septum, hyaline, in Lugol's Solution negative.

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