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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: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 50. Lopadium. Ectolechiaceae (Vain.) Zahlbr. (1905); family of unknown placement (incertae sedis); Lecanorales.

Taxonomic Literature: Galloway D.J., Flora of New Zealand lichens: i-lxxiii, 1-662 [260-
262], Wellington (1985); Hafellner H., Beih. Nova Hedwigia 79: 241-
371 [300-301] (1984); Poelt J. & Vezda A., Biblioth. Lichenol.
16: 1-390 [205-206] (1981); Purvis O.W. in: Purvis O.W. et al. (eds),
The Lichen Flora of Great Britain and Ireland, London (1992);
Santesson R., Symb. Bot. Upsal. 12: 1-590 [522-545] (1952).

Biogeography: Checklist records: Austria, Germany, Great Britain, Italy, New Zealand, Sonoran Desert, Sweden and Norway, United States and Canada (continental), and Republic of South Africa.

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

Thallus: Crustose, granular. Upper Surface: Special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate or isidiate; not 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, soon sessile to substipitate. Margin: Prominent; external filaments absent. Exciple: Black or brown. Periphyses: Absent. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed.

Ascospores: 1–2 per ascus, ellipsoid, 65-115 µm long, 30-45 µm wide, obtuse; septa present; both transversally and longitudinally; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

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