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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: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 3. Tylophoron. Genus of unknown placement (incertae sedis); of unknown placement (incertae sedis).

Taxonomic Literature: Aptroot A., Diederich P., Sérusiaux E. & Sipman H.J.M.,
Biblioth. Lichenol. 64: 1-220 [208] (1997); Tibell L., Caliciales of
Costa Rica. - Lichenologist 14: 219-254 [251-253] (1982); Tibell L.,
Beih. Nova Hedwigia 79: 597-713 (1984).

Biogeography: Checklist records: Guianas, New Guinea, Thailand, United States and Canada (continental), and Republic of South Africa.

Thallus: Crustose, not subdivided parts, granular. Thallus Outline: Soon disappearing or persistent. Upper Surface: Grey or white; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent or present:; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

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. Hymenium: Mazaedioid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed.

Ascospores: Ellipsoid, 10-13 µm long, 4.5-5.5 µm wide, obtuse or aciculate; septa present; transversally septate, 1-transversally septate; wall thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, dark brown, in Lugol's Solution negative, wall not ornamented.

Secondary Metabolites: Present, of the following substance class(es): orcinol depsides and xanthones.

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