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Lecidea Ach. (1803)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: genus. Number of known taxa within this rank: 100 (400: s.ampl. A. Aptroot 99-09-27). Lecidea. Lecideaceae Chevall. (1826); Cladoniineae; Lecanorales.

Type Information: Type: Lecidea fuscoatra (L.) Ach.

Taxonomic Literature: Casares-Porcel M., Hafellner J. & Gutierrez-Carretero L.,
Lichenologist 28: 37-47 (1996); Galloway D.J., Flora of New Zealand.
Lichens: 1-662 [220-241] (1985); Hawksworth D.L. & Coppins B.J
in: Purvis O.W., Coppins B.J., Hawksworth D.L., James P.W. &
Moore D.M. (eds), The lichen flora of Great Britain and Ireland: 1-
710 [318-336] (1992); Hertel H., Beih. Nova Hedwigia 24: 1-155 + figs
(1967); Hertel H., Khumbu Himal, Ergebn. Forsch.-Unternehmen Nepal
Himalaya 6(3): 145-378 [226-290] (1977); Hertel H. in: Hertel H.
& Oberwinkler F. (eds), Beih. Nova Hedwigia 79: 399-499 (1984);
Hertel in: Farkas E.+., Lücking R. & Wirth V. (eds),
Biblioth. Lichenol. 58: 137-180 (1995); Rambold G. & Triebel D.,
Biblioth. Lichenol. 48: 1-201 [127-129] (1992); Hertel H., in: Tibell
L. & Hedberg, I. (eds), Symb. Bot. Upsal. 32(1): 95-111 (1997);
Inoue M., J. Sci. Hiroshima Univ., Ser. B, Div. 2 (Bot.), 1: 1-55
(1981); Rambold G., Biblioth. Lichenol. 34: 1-346 (1989); Rambold G.
& Triebel D., Biblioth. Lichenol. 48: 1-201 [110-112] (1992);
Schwab A.J., Mitt. Bot. Staatssamml. München 22: 221-476 (1986).

Biogeography: Checklist records: Austria, Bolivia, Germany, Great Britain, Italy, New Guinea, New Zealand, Sonoran Desert, Sweden and Norway, Thailand, United States and Canada (continental), Namibia, and Republic of South Africa.

Ecology: Biotroph; lichenized or lichenicolous; substrate non-calciferous or calciferous.

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Chlorosarcinopsis and Trebouxia (A. Beck 22-05-97); Trebouxiaceae and genus incertae sedis; Trebouxiales and family of unknown placement (incertae sedis), Chlorophyceae and Trebouxiophyceae, Eukariota. Secondary photobiont absent.

Thallus: Indistinct or crustose, not subdivided parts, squamulose, placodioid, granular, rimose, or areolate (primarily areolate). Thallus Outline: Soon disappearing or persistent. Upper Surface: Black, grey, green, yellow, brown, red, white, olive, brownish yellow, orange, or pink (rosé); special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia or with thalloconidia thalloconidia. Lower Surface: Attached by the whole lower surface; special structures absent or present:; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia or with thalloconidia thalloconidia; not cavernulate; not tomentose.

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

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, not emerging, becoming adnate to soon sessile. Margin: Indistinct to prominent; external filaments absent. Exciple: Black, grey, brown, white, olive, brownish yellow, or violet. Periphyses: Absent. Epithecium: Apical cells black, grey, green, yellow, brown, red, hyaline, olive, brownish yellow, orange, bluish red (= reddish blue, incl. violet, purple), or pink (rosé). Hymenium: Iodine reaction: Lugol’s negative or Lugol’s positive, not hemiamyloid or hemiamyloid. Interascal Hyphae: Present, scarcely branched to distinctly branched, not or scarcely anastomosed. Hypothecium: Black, grey, green, brown, white, olive, brownish yellow, orange, or violet.

Asci: Tholus thickened, amyloid, with amyloid cap; dehiscence lecanoralean; exoascus not amyloid or euamyloid, not hemiamyloid or hemiamyloid.

Ascospores: c. 8 per ascus, globose, broadly ellipsoid, ellipsoid, oblong-obtuse, or ovoid, 8-18 µm long, 2.5-7 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.

Conidia: Bacilliform.

Secondary Metabolites: Not detected or present, of the following substance class(es): orcinol depsides and ß-orcinol depsidones.

(report generated 04.Okt.2007)

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