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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: accepted or basionymous. Taxonomic rank: genus. Glonium. Hysteriaceae Chevall. (1826); Dothideales.

Taxonomic Literature: Kantvilas G. & Coppins B.J., Lichenologist 29: 525-531 (1997); Speer E.O., Bull. Trimestriel Soc. Mycol. France 102: 101-105 (1986); Zogg H., Beitr. Kryptogamenfl. Schweiz 11(3): 1-190 [57-74] (1962).

Biogeography: Checklist records: Germany, Great Britain, Italy, Sweden and Norway, United States and Canada (continental), and Australia.

Ecology: Biotroph; lichenized or lichenicolous; terricolous, lignicolous, or corticolous; substrate non-calciferous.

Thallus: Indistinct or crustose, filamentose. Upper Surface: Black, brown, or green; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent.

Medulla: Iodine reaction 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, linear or irregular, not emerging, becoming adnate to soon sessile, stromatic. Margin: Prominent. Exciple: Black or brown. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Brown or brownish yellow.

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

Ascospores: c. 8 per ascus, clavate, cylindrical, oblong-obtuse, ovoid, or fusiform, 15-76 µm long, 2-15 µm wide, obtuse or aciculate; septa present; transversally septate, 1-transversally septate; wall thin, not thickened at the septum, laterally constricted where the septum meets the spore wall, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented.

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