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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Poelt J. (95-03-14) and Kasalicky T. (98-03-17); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 1. Ioplaca. Teloschistaceae Zahlbr. (1898); Teloschistineae; Lecanorales.

Type Information: Type: Ioplaca sphalera Poelt = Ioplaca pindarensis (Räsänen) Poelt & Hinteregger.

Taxonomic Literature: Kärnefelt I., Cryptog. Bot. 147-203 (1989); Poelt J., Khumbu Himal 6: 443-446 (1977); Poelt J. & Hinteregger E., Biblioth. Lichenol. 50: 1-247 [234-236] (1993).

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

Thallus: Crustose or foliose, areolate (primarily areolate), peltate, umbilicate. Upper Surface: Brownish yellow or orange; special structures absent. 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, not emerging. Margin: Indistinct to distinct; external filaments absent. Exciple: Black. Periphyses: Absent. Epithecium: Apical cells brown. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White or brownish yellow.

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

Ascospores: c. 8 per ascus, ellipsoid, broadly ellipsoid, or fusiform, 11-18 µm long, 6-9 µm wide, obtuse; septa present; transversally septate, 1-transversally septate; wall thin, thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Secondary Metabolites: Present, of the following substance class(es): (anthra-)quinones.

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