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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Elix J. A. (95-06-01) and Scholz P. (02-05-13); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 37. Bulbothrix. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Taxonomic Literature: Elix J.A., Bryologist 96: 359-383 (1993); Hale M.E., Smithsonian
Contributions to Botany 31: 1-62 (1976); Marcano V., Mohali S.,

Palacios-Prü E. & Morales Méndez A., Lichenologist
28: 421-430 (1996); Morales-Méndez A., Marcano V., Galiz L.,
Mohali S. & Palacios-Prü E., in: Daniels F.J.A., Schulz M.
& Peine J. (eds): Flechten Follmann: 281-286, Cologne (1995);
Nash T.H. III & Elix J.A. Ryan B.D. in: Nash T.H. III et al.
(eds), Lichen Flora of the Greater Sonoran Desert Region vol. 1: 114-
116, Tempe (2002).

Biogeography: Checklist records: Bolivia, Guianas, Sonoran Desert, Thailand, United States and Canada (continental), and Republic of South Africa.

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Trebouxia; Trebouxiaceae; Trebouxiales, Trebouxiophyceae, Eukariota. Secondary photobiont absent.

Thallus: Foliose, not subdivided parts, lobed. Thallus Outline: Soon disappearing. Upper Surface: Grey; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate or isidiate; not sorediate or sorediate; not cephalodiate; not lobulate or lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by holdfasts; special structures present:; not pseudocyphellate; not cyphellate; 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, forming all across the thallus surface, soon sessile. Margin: Prominent; external filaments absent. Exciple: Grey or white. Periphyses: Absent. Epithecium: Apical cells brown or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus thickened, amyloid, with non-amyloid wide axial body and divergent amyloid flanks towards apex; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, curved, or semilunate, 5-21 µm long, 2-12 µm wide, obtuse; septa absent; 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 or sessile, formed all accross the thallus surface or along the thallus periphery.

Secondary Metabolites: Present, of the following substance class(es): orcinol depsides, orcinol depsidones, ß-orcinol depsides, ß-orcinol depsidones, and dibenzofurans [and usnic acids].

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