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Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Tehler A. (-95-11-27) and Triebel D. (98-01-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 1 (A. Aptroot 99-09-27). Reinkella. Family of unknown placement (incertae sedis); Arthoniales.

Taxonomic Literature: Tehler A., Lohtander K., Myllys L. & Sundin R. in: Tibell L. & Hedberg, I. (eds), Symb. Bot. Upsal. 32(1): 255-265 (1997).

Biogeography: Checklist records: Sonoran Desert and United States and Canada (continental).

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, linear, not emerging. Margin: Prominent; external filaments absent. Exciple: Black or brown. Epithecium: Apical cells green or olive. Interascal Hyphae: Present, scarcely branched. Hypothecium: Black or brown.

Ascospores: Fusiform, 21-29 µm long, 3-5 µm wide; septa present; transversally septate, 7-9-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed, formed all accross the thallus surface.

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