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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Lücking R. (95-08-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 15 (estimation provided by A. Aptroot 99-09-27). Calopadia. Ectolechiaceae (Vain.) Zahlbr. (1905); family of unknown placement (incertae sedis); Lecanorales.

Taxonomic Literature: Aptroot A., Diederich P., Sérusiaux E. & Sipman H.J.M., Biblioth. Lichenol. 64: 1-220 [42-44] (1997); Lücking R., Lichenologist 31(3): 269-289 (1999); Vezda A., Folia Geobot. Phytotax. 21: 199-219 (1986).

Biogeography: Checklist records: New Zealand, United States and Canada (continental), and Guianas.

Lichen Photobionts: Primary photobiont present; chlorococcal. Secondary photobiont 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. Margin: Prominent; external filaments absent. Exciple: White or brownish yellow. Periphyses: Absent. Epithecium: Apical cells hyaline or brownish yellow. Interascal Hyphae: Present. Hypothecium: Brown.

Ascospores: 1–2 to c. 8 per ascus, ellipsoid, oblong, or cylindrical, 57-120 µm long, 8-32 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.

Conidiomata: Absent resp. not observed or present; campylidial; sessile, formed all accross the thallus surface.

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