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Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Triebel D. (98-01-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Nimisiostella. Genus of unknown placement (incertae sedis); of unknown placement (incertae sedis).

Type Information: Type: Nimisiostella lichenicola Calat., Barreno & O.E. Eriksson.

Taxonomic Literature: Calatayud V., Barreno E. & Eriksson O.E., Syst. Ascomycetum 15: 111-116 (1997).

Medulla: Iodine reaction in Lugol's solution negative; not different with or without KOH pre-treatment (euamyloid).

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, soon sessile. Margin: Prominent; external filaments absent. Exciple: Black or brown. Periphyses: Absent. Epithecium: Apical cells black or brown. Hymenium: Iodine reaction: Lugol’s negative, hemiamyloid. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed. Hypothecium: Brown or brownish yellow.

Asci: Tholus thickened, not amyloid; ocular chamber indistinct; dehiscence lecanoralean; exoascus not amyloid, not hemiamyloid.

Ascospores: 12-16 to 16-32 per ascus, globose (stellate), 7-10 µm long, 7-10 µm wide; septa absent; wall thin, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented.

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