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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Scholz P. (02-05-15); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 5. Glypholecia. Acarosporaceae Zahlbr. (1906); Acarosporineae; Lecanorales.

Taxonomic Literature: Taxonomic notes: Glypholecia is treated in a broad sense. Hafellner J., Cryptog. Bot. 5: 99-104 (1995); Nylander W., Ann. Sci. Nat. Bot., ser. 3, 20: 315-320 [317] (1853); Poelt J.,
Bestimmungsschlüssel europäischer Flechten: 1-757 [297] (1969); Ryan B.D. in: Nash T.H. III et al. (eds) Lichen Flora of the Greater Sonoran Desert Region vol. 1, 203-204, Tempe (2002).

Biogeography: Checklist records: Austria, Italy, Sonoran Desert, Sweden and Norway, and United States and Canada (continental).

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Trebouxia; Trebouxiaceae; Trebouxiales, Trebouxiophyceae, Eukariota. Secondary photobiont absent.

Thallus: Crustose or foliose, not subdivided parts, peltate, umbilicate. Upper Surface: White; special structures absent. Lower Surface: Attached by the whole lower surface or attached by holdfasts; 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; external filaments absent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells brownish yellow. Hymenium: Iodine reaction: Lugol’s positive. Interascal Hyphae: Present. Hypothecium: White.

Asci: Tholus thickened, not amyloid or amyloid (tholus I+ slightly blue); ocular chamber indistinct; dehiscence lecanoralean.

Ascospores: More than 32 per ascus, globose, 3.5-4 µm long, 3.5-4 µm wide, obtuse; septa absent; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

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