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Buellia De Not. (1846)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Matzer M. & Mayrhofer H. (95-01-15), Scholz P. (07-07-24), and Triebel D. (98-01-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 400. Buellia. Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Type Information: Type: Buellia disciformis (Fr.) Mudd.

Taxonomic Literature: Aptroot A., Pyxinaceae (Lichens) in: Görts-van Rijn A.R.A. (ed.), Flora of the Guianas: 1-59 (1987); Aptroot A., Diederich P., Sérusiaux E. & Sipman H.J.M., Biblioth. Lichenol. 64: 1-220 [28-35] (1997); Burgaz A.R. & Sarrión F.J., Lichenologist 27: 305-308 (1995); Calatayud V. & Barreno E., Cryptog. Bryol. Lichénol. 16: 257-262 (1995); Etayo J. & Osorio H.S., Com. Bot. Mus. Nac. Hist. Nat. Antropol. 6(129): 1-19 [5-7] (2004); Galloway D.J., Flora of New Zealand. Lichens: 1-662 [44-53] (1985); Hafellner J., Beih. Nova Hedwigia 62: 1-248 [49-72] (1979); Hafellner J. & Poelt J., Pl. Syst. Evol. 126: 243-254 (1976); Hafellner J. & Poelt J., Phyton (Horn) 20: 129-133 (1980); Hafellner J., Mayrhofer H. & Poelt J., Herzogia 5: 39-79 (1979); Imshaug H.A., Farlowia 4: 473-512 (1955); Kalb K. & Hafellner J., Herzogia 9: 45-102 (1992); Lamb I.M., Sci. Rep. Brit. Antarc. Surv. 61: 1-129 (1968); Lindsay D.C., Bull. Brit. Antarc. Surv. 24: 11-19 (1971); Lindsay D.C., Bull. Brit. Antarc. Surv. 37: 81-89 (1973); Matzer M., Mayrhofer H. & Scheidegger C., Lichenologist 26: 39-46 (1994); Nordin A., Symb. Bot. Upsal. 31(3): 327-354 (1996); Orange A., Coppins B.J. & Scheidegger C. 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 [129-137] (1992); Rambold G., Mayrhofer H. & Matzer M., Pl. Syst. Evol. 192: 31-40 (1994); Rambold G. & Triebel D., Biblioth. Lichenol. 48: 1-201 [93-96] (1992); Schauer T., Mitt. Bot. Staatssamml. München 5: 609-626 (1965); Scheidegger C., Bot. Helv. 97: 99-116 (1987); Scheidegger C., Bot. Chron. 10: 211-220 (1991); Scheidegger C., Lichenologist 25: 315-364 (1993); Scholz P. & Knoph J.-G. in: Farkas E., Lücking R. & Wirth V. (eds), Biblioth. Lichenol. 58: 405-410 (1995); Steiner M. & Mayrhofer H., Nova Hedwigia 45: 315-326 (1987).

Biogeography: Checklist records: Austria, Bolivia, Germany, Great Britain, Guianas, 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; terricolous, bryophytic, lignicolous, or corticolous; substrate non-calciferous or calciferous.

Lichen Photobionts: Primary photobiont absent or present; chlorococcal. Primary photobiont taxonomy: Eukariota. Secondary photobiont absent.

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

Medulla: Iodine reaction in Lugol's solution negative or in Lugol's solution positive; 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, not emerging, becoming adnate to soon sessile. Margin: Indistinct to prominent; external filaments absent. Exciple: White, black, green, olive, brownish yellow, brown, or orange. Periphyses: Absent. Epithecium: Apical cells black, green, or brown. Hymenium: Oil inspersed, iodine reaction: Lugol’s positive, not hemiamyloid. Interascal Hyphae: Present, scarcely branched to distinctly branched (present only in damaged apothecia), not or scarcely anastomosed. Hypothecium: White, black, green, brownish yellow, brown, or orange.

Asci: Tholus thickened, amyloid, with non-amyloid narrow axial body and amyloid convergent flanks towards apex or with non-amyloid wide axial body and divergent amyloid flanks towards apex; ocular chamber broad; dehiscence lecanoralean; exoascus euamyloid, not hemiamyloid.

Ascospores: c. 4 to more than 32 per ascus, ellipsoid, broadly ellipsoid, or reniform, 7-23 µm long, 3-11 µm wide, obtuse or aciculate; septa present; transversally septate, 1-4-transversally septate, formed by the proper spore wall; wall thin, not thickened at the septum or thickened at the septum, laterally constricted where the septum meets the spore wall, dark brown, in Lugol's Solution negative, wall not ornamented or ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed, formed all accross the thallus surface.

Conidiogeneous Cells: Intercalar. Conidia: Bacilliform.

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

(report generated 04.Okt.2007)


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