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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Schultz M. (00-03-02) and Scholz P. (02-05-15); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: genus. Number of known taxa within this rank: 3. Lemmopsis. Lichinaceae Nyl. (1854); Lichinales.

Taxonomic Literature: Clauzade G. & Roux C., Bull. Soc. Bot. Centre-Ouest N.S. - Numero
Special 7: 1-893 [490] (1985); Ellis L.T., Lichenologist 13: 123-139
(1981); Gilbert O.L. in: Purvis O.W. et al. (eds), The Lichen Flora
of Great Britain and Ireland, London (1992); Schultz M. in: Nash T.H. III et al. (eds) Lichen Flora of the Greater Sonoran Desert Region vol. 1, 261-262, Tempe (2002).

Biogeography: Checklist records: Austria, Germany, Great Britain, Italy, Sonoran Desert, and Sweden and Norway.

Lichen Photobionts: Primary photobiont present; cyanobacterial. Primary photobiont taxonomy: Chroococcales, Cyanobacteria, Prokaryota. Secondary photobiont absent.

Thallus: Crustose, granular. Thallus Outline: Soon disappearing. Upper Surface: Black; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent.

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, forming all across the thallus surface, soon sessile. Wall: Not carbonized, not fused. Margin: Distinct to prominent; external filaments absent. Exciple: Yellow, white, or brownish yellow. Periphyses: Absent. Epithecium: Apical cells brownish yellow. Hymenium: Iodine reaction: Lugol’s negative, hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Yellow, brown, white, or brownish yellow.

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

Ascospores: c. 8 per ascus, broadly ellipsoid or ellipsoid, 10-28 µm long, 7-15 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, formed all accross the thallus surface.

Conidiogeneous Cells: Apical. Conidia: Ellipsoid; microconidial, not branched; aseptate; cell wall hyaline.

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