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Data Set Maintenance: Data set standard item. Data set author(s): Hertel H. (99-01-01). Data set not revised.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: species. Lecidea. Synonyms: Lecidea austromongolica H.Magn.; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Müller-Argau J., Flora 57: 348-349 (1874); type specimen label data: Switzerland, Wallis, Torembé in Vallée de Bagnes Valesiae, 6200 ped., J. Müller-Argau (W, isotype).

Taxonomic Literature: Hertel H. Herzogia 2: 242-243 (1971); Hertel H., Khumbu Himal 6: 262-265 (1977); Buschardt A., Biblioth. Lichenol. 10: 193-196 (1979); Hertel H., Herzogia 5: 453-454 (1981); Andreev M.P., Baibultova N.E., Novit. Syst. Plant. Non Vasc. 22: 168 (1985); Clauzade G., Roux C., Bull. Soc. Bot. Centre-Ouest, nouv. ser., num. spec. 7: 483 (1985); Andreev M.P., Kudratov I., Botan. Zhurn. 77:106 (1992); Hertel H., Biblioth. Lichenol. 58: 165 (1995).

Biogeography: Colline, montane, and alpine. Continent: Europe (Au, Ga, He, It, Ju, Si), Northern America (Greenland - UNSICHER), and Asia-Temperate (TEST! Afghanistan, India (N.W. Himalaya), Kirgisia (Tjan-Shan), Mongolia, Tadzhikistan (Pamir)).

Ecology: Biotroph; lichenized; normally endosubstratic or episubstratic; substrate non-calciferous.

Thallus: Not subdivided parts, dispersed throughout and distinctly seperate; lobes angular at the front; separate thallus parts 0-.25 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White, plane; not sorediate; without thalloconidia thalloconidia.

Medulla: Iodine reaction in Lugol's solution negative or in Lugol's solution positive.

Ascocarps: Soon sessile, slightly constricted or strongly constricted at the base, 8-100 per cm², .7-1.3-(2.3) mm in diam.. Margin: Not flexuose or slightly flexuose, persistent or excluded, 60-120 µm wide, epruinose. Disk: Plane, weakly convex, or strongly convex, black, epruinose, pruina scarce, without an umbo. Exciple: Hyphae radiating outwards; 3-3.5 µm wide; grey; inspersed with crystals. Epithecium: Apical cells normally olive, green, or turquoise. Hymenium: 40-50-(65) µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 15-45 µm high; white or rarely pale green. Hypothecium: White, brownish yellow, or brown.

Ascospores: Broadly ellipsoid or ellipsoid, (4.5)-6-7.9-(9.5) µm long, (2.5)-3.3-4.3-(5) µm wide; wall thick, distinctly differentiated into primary and secondary wall, not ornamented.

Spot Tests: Medulla: K –, C –, PD – ascocarp margin (in section): K – or + bluish red, C – disk: C – hypothecium: K – epihymenium: K –.

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