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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: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Pachyospora. Pertusariaceae Körb. (1855); Pertusariineae; Lecanorales.

Taxonomic Literature: Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662 [328], Wellington (1985).

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

Thallus: Crustose, granular or rimose. Upper Surface: Grey or white; 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, becoming adnate. Margin: Distinct to prominent; external filaments absent. Periphyses: Absent. Interascal Hyphae: Present.

Ascospores: 1–2 to c. 8 per ascus, ellipsoid, broadly ellipsoid, or ovoid, 36-62 µm long, 24-30 µm wide, obtuse; septa absent; wall thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented or ornamented.

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