Peltigera Willd. (1787)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Triebel D. (00-06-12); not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 75 (A. Aptroot 99-09-27). Peltigera. Peltigeraceae Dumort. (1822); Peltigerineae; Lecanorales.

Type Information: Type: Peltigera canina (L.) Willd.

Taxonomic Literature: Clauzade G. & Roux C., Bull. Soc. Bot. Centre-Ouest N.S. - Numero

Special 7: 1-893 [566-571] (1985); Galloway D.J., Flora of New

Zealand Lichens: i-lxxiii, 1-662 [362-366], Wellington (1985);
Keuck
G., Biblioth. Lichenol. 6: 1-175 (1977); Kurokawa S.,
Jinzenji Y.
& Shibata S., Chiang H., Bull. Nat. Sci Mus. 9: 101-
114 (1966);
Martínez Moreno M.I., Ruzia 15: 1-200 (1999);
Poelt J. &
Vezda A., Biblioth. Lichenol. 16: 1-390 [236-242]
(1981); Purvis O.W.
& James P.W. in: Purvis O.W. et al. (eds),
The Lichen Flora of
Great Britain and Ireland, London (1992);
Vitikainen O., Bull. Br.
Lichen. Soc. 50: 28-36 (1982); Vitikainen
O., Acta Bot. Fenn. 152: 1-
96 (1994); White F.J. & James P.W.,
Bull. Br. Lichen. Soc. 57: 1-
41 (1985).

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

Ecology: Biotroph; lichenized; terricolous, bryophytic, lignicolous, or corticolous; substrate non-calciferous or calciferous.

Lichen Photobionts: Primary photobiont present; cyanobacterial and chlorococcal. Primary photobiont taxonomy: Coccomyxa and Nostoc (A. Beck 22-05-97); Nostocaceae and genus incertae sedis; Nostocales and family of unknown placement (incertae sedis), Cyanobacteria and Trebouxiophyceae, Prokaryota or Eukariota. Secondary photobiont absent or present. Secondary photobiont taxonomy: Nostoc, Nostocaceae, Nostocales, Cyanobacteria, Prokaryota.

Thallus: Foliose, not subdivided parts, lobed. Thallus Outline: Persistent. Upper Surface: Grey, green, or brown; special structures absent or present:; not pseudocyphellate; eciliate; without hairs or hairy; not isidate or isidiate; not sorediate; not cephalodiate or cephalodiate; not lobulate or lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by holdfasts; special structures absent or present:; not pseudocyphellate; not cyphellate; not rhizinate or rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose or tomentose.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular or lingulate, forming directly at the thallus margin, not emerging, becoming adnate to substipitate. Margin: Indistinct to prominent; external filaments absent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells brownish yellow or brown. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus thickened, amyloid, with amyloid tube; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, fusiform, 25-92 µm long, 2-8 µm wide, obtuse or aciculate; septa present; transversally septate, 3-7-transversally septate; wall thin, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; sessile, formed along the thallus periphery.

Conidiogeneous Cells: Apical. Conidia: Fusiform or bifusiform.

Secondary Metabolites: Present, of the following substance class(es): orcinol depsides and (tri-)terpenoids.

(report generated 04.Okt.2007)