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Lecidea lapicida (Ach.) Ach. var. lapicida

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

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Lecidea. Synonyms: Lecidea austrogeorgica Müll.Arg., Lecidea austropatagonica Müll.Arg., Lecidea contiguella Nyl., Lecidea darbishirei Zahlbr., Lecidea declinans Nyl., Lecidea declinascens Nyl., Lecidea dendroclinis Nyl., Lecidea hoelii Lynge, Lecidea lapillicola Darb., Lecidea luteoatra Nyl., Lecidea reducens Nyl., Lecidea rupicida Vain., Lecidea scotoplaca H.Magn., Lecidea subinvoluta Müll.Arg., Lecidea subplanata Vain.; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Acharius E., Methodus Lich. 37 (1803) - Lichen lapicida Ach.: Acharius E., Lich. Suec. Prodr. 61 (1798); type specimen label data: Sweden ["Suecia"] without locality (H-Ach, lectotype).

Taxonomic Literature: Fries T.M., Lichenogr. Scand. 493-494 (1874); Vainio E.A., Acta Soc. Fauna Fl. Fenn. 57(2): 125-133 (1934); Anderson R.A., The Lichen Genus Lecidea in Rocky Mountain National Park, 38-40 (Diss. Univ. Colorado, Boulder; 1964); Hertel H., Willdenowia 6: 241 (1971); Hertel H., Herzogia 2: 239 (1971); Nowak J., Tobolewski Z., Porosty Polskie (Warszawa & Kraków) 549-550 (1975); Hertel H., Khumbu Himal 6: 256-258 (1977); Hertel H., Mitt. Bot. München 17: 174 (1981); Hertel H., Zhao C.F., Lichenologist 14: 148 (1982); Inoue M., J. Sci. Hiroshima Univ., Ser. B, Div. 2 (Bot.), 18(1): 38-39 (1982); Hertel H., Beih. Nova Hedwigia 79: 419-420 (1984); Hertel H., Mitt. Bot. München 21: 323-325 (1985); Clauzade G., Roux C., Bull. Soc. Bot. Centre-Ouest, nouv. ser., num. spec. 7: 461 (1985); Hladun N., Inst. d'estudis Catalans, Arx. Secc. Ciènces 80: 95 (1985); Hertel H., Mitt. Bot. München 23: 326-327 (1987); Hertel H., Mitt. Bot. München 28: 221-223 (1989); Rambold G., Biblioth. Lichenol. 34: 210-214 (1989); Hertel H., Mitt. Bot. München 30: 308-309 (1991); Andreev M.P., Kudratov I., Botan. Zhurn. 77: 105 (1992); Türk R., Poelt J., Österr. Akad. Wiss., Biosystematics and Ecology Ser. 3: 63 (1993 - bibliography of Austrian lichens); Hertel H., Biblioth. Lichenol. 58: 161-162 (1995); Wirth V., Flechtenflora, 2.Aufl., 391 (1995); Wirth V., Flechten Baden-Württembergs, Teil 1, 514-515 (1995).

Biogeography: Subantarctic (South Georgia, Prince Edward Isl.); montane and alpine. Continent: Europe (Au, Br, Co, Cz, Da, Fe, Ga, Ge, He, Hs, Is, It, No, Po, Rm, Rs, Sb, Su), Northern America (Greenland, Canada, USA), Southern America (Argentina, Chile, Venezuela), Asia-Temperate (Cyprus, India, Japan, China), Australasia (Australia, Tasmania, N.Z.), and Antarctica (Antarctic Peninsula).

Ecology: Biotroph; lichenized; endosubstratic or episubstratic; substrate non-calciferous, calciferous (rarely on slightly calcareous schist), or metalliferous.

Thallus: Not subdivided parts, areolate (primarily areolate), continuous throughout or dispersed along the periphery, continuous in the centre; lobes angular at the front; separate thallus parts 0-1.5 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White, lemon (citrine), brownish yellow, pale grey, or red (rusty coloured by Fe), plane; not sorediate; without thalloconidia thalloconidia.

Medulla: Iodine reaction in Lugol's solution positive.

Ascocarps: Soon sessile, not constricted, slightly constricted, or strongly constricted at the base, 6-200 per cm², .5-1.4-(3.3) mm in diam.. Margin: Not flexuose, slightly flexuose, or strongly flexuose, persistent or excluded, 44-130 µm wide, epruinose or distinctly pruinose (specimen from Cyprus). Disk: Plane, weakly convex, or strongly convex, black, epruinose, without an umbo, forming occasionally, on few disks only. Exciple: Hyphae radiating outwards; 2.5-4.5 µm wide; grey or pale yellow; inspersed with crystals. Epithecium: Apical cells olive, green, or turquoise, cell pigment reacting with 10% HCl (in H2O), cell pigment HCl+ blue. Hymenium: 40-75 µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 17-70 µm high; white. Hypothecium: White, brownish yellow, or brown.

Ascospores: Rarely subglobose, broadly ellipsoid, or ellipsoid, (7.5)-9.1-14.5-(17) µm long, (3.8)-4.5-7.4-(9) µm wide; wall not ornamented.

Conidia: (5)-7-14-(22) µm long.

Secondary Metabolites: Rarely not detected or present, stictic acid.

Spot Tests: Medulla: K – or + yellow, C –, PD –, + deep yellow, or + orange (medulla); ascocarp margin (in section): K – or + deep yellow, C – disk: C – hypothecium: K – epihymenium: K – or + green.

(report generated 04.Okt.2007)

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