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Lecidea variegatula Nyl.

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 lipseri Klement, L. microsporella Lettau; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Nylander W., Flora 48: 6 (1865); type specimen label data: Russia, Ostpreußen, Frische Nehrung, Kahlberg, Steinwiese, auf Geröllsteinen, 30-40 m, 1864(?), A. Ohlert (H-Nyl 15319, holotype).

Taxonomic Literature: Hertel H., Beih. Nova Hedwigia 24: 112-113 (1967); Hertel H., Herzogia 1: 325, 328 (1969); Hertel H., Herzogia 2: 52-53 (1970); Hertel H., Herzogia 2: 500 (1973); Nowak J., Tobolewski Z., Porosty Polskie (Warszawa & Kraków) 554 (1975); Clauzade G., Roux C., Bull. Soc. Bot. Centre-Ouest, nouv. ser., num. spec. 7: 470 (1985); John V., Beitr. Landespflege Rheinland-Pfalz 13(2): 126 (1990); Hertel H., Biblioth. Lichenol. 58: 177 (1995).

Biogeography: Subantarctic (Chile); colline and montane. Continent: Europe (Cz, Ge, Po, Rs) and Southern America (Chile).

Ecology: Biotroph; lichenized; episubstratic; substrate non-calciferous or calciferous (sandstone rarely with traces of carbonate).

Thallus: Areolate (primarily areolate), subsquamulose, continuous throughout, dispersed along the periphery, continuous in the centre, or dispersed throughout and distinctly seperate; lobes angular or rounded at the front; separate thallus parts.15-.3 mm thick. Thallus Size and Differentiation: Large or small; main branches basally not constricted or basally constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: Lemon (citrine), brownish yellow, grey, or brown (pale ochre), convoluted, plane or convex; not sorediate; without thalloconidia thalloconidia.

Upper Cortex: Epicortex present. Medulla: Iodine reaction in Lugol's solution negative.

Ascocarps: Soon sessile, slightly constricted or strongly constricted at the base, 80-400 per cm², .3-.9-(1.3) mm in diam.. Margin: Not flexuose, persistent, 20-50 µm wide, epruinose. Disk: Plane to weakly convex to rarely strongly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 3-5 µm wide; grey; not inspersed with crystals to inspersed with crystals. Epithecium: Apical cells olive to green to turquoise, cell pigment reacting with 10% HCl (in H2O), cell pigment HCl+ blue. Hymenium: 25-40 µm high; white to pale green; iodine reaction: Lugol’s positive. Subhymenium: 10-30 µm high; white. Hypothecium: White.

Ascospores: Ellipsoid to oblong, (4.5)-5-7.2-(8) µm long, (2)-2.4-2.8-(3.5) µm wide; wall not ornamented.

Conidia: (3.5)-4.6-5.1-(6) µm long.

Secondary Metabolites: Not detected.

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

(report generated 04.Okt.2007)

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