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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) and Scholz P. (06-06-13); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 12 (A. Aptroot 99-09-27). Sporopodium. Synonyms: Ectolechia §§§ 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 [181-186] (1997); Aptroot A. & Sipman H.J.M., Lichenologist 25: 121-135 (1993); Lücking R., Lichenologist 31(3): 269-289 (1999); Lücking R. & Kalb K., Bot. J. Linn. Soc. 139: 171-180 (2002); Santesson R., Symb. Bot. Upsal. 12: 1-590 [509-521] (1952); Sérusiaux E., Lichenologist 18: 1-35 (1986).

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

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

Thallus: Crustose, not subdivided parts, granular. Thallus Outline: Soon disappearing or persistent. Upper Surface: Grey or green; 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, forming all across the thallus surface, soon sessile. Margin: Prominent; external filaments absent or present. Exciple: White. Periphyses: Absent. Epithecium: Apical cells hyaline or brownish yellow. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed. Hypothecium: White, brownish yellow, or brown.

Ascospores: 1–2 per ascus, ellipsoid or oblong, 55-110 µm long, 14-24 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.

Secondary Metabolites: Present, of the following substance class(es): ß-orcinol depsidones, (tri-)terpenoids, and xanthones.

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