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Peltula Nyl. (1853)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Kasalicky T. (98-06-10) and Scholz P. (02-05-16); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 40. Peltula. Synonyms: Corynecystis Brusse; Peltulaceae Büdel (1986); Teloschistineae; Lecanorales.

Type Information: Type: Peltula radicata Nyl.

Taxonomic Literature: Büdel B., Biblioth. Lichenol. 23: 1-105 (1987); Büdel B.,
Biblioth. Lichenol. 25: 209-217 (1987); Büdel B. & Nash
T.H., Lichenologist 25: 279-284 (1993); Büdel B. & Nash T.H.
III in: Nash T.H. III et al. (eds) Lichen Flora of the Greater
Sonoran Desert Region vol. 1, 331-340, Tempe (2002); Clauzade G.
& Roux C., Bull. Soc. Bot. Centre-Ouest N.S. - Numero Special 7:
1-893 [571-572] (1985); Egea J.M., Biblioth. Lich. 31: 1-122 (1989);
Filson R., Muelleria 6: 495-517 (1988); Galloway D.J., Flora of New
Zealand Lichens: i-lxxiii, 1-662 [366-367], Wellington (1985);
Swinscow T.D.V. & Krog H., Norweg. J. Bot. 26: 213-224 (1979);
Wetmore C.M., Ann. Missouri Bot. Gard. 57: 158-209 (1970).

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

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

Lichen Photobionts: Primary photobiont present; cyanobacterial. Primary photobiont taxonomy: Anacystis, Chroococcidiopsis, and Scytonema (A. Beck 22-05-97); Chroococcaceae and Scytonemataceae; Chroococcales and Nostocales, Cyanobacteria, Prokaryota. Secondary photobiont absent.

Thallus: Crustose or foliose, not subdivided parts, squamulose, placodioid, subfruticose, or areolate (primarily areolate), peltate. Thallus Outline: Soon disappearing. Upper Surface: Rarely black, grey, green, brown, olive, or brownish yellow; 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 holdfasts; special structures 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, forming all across the thallus surface, not emerging, becoming adnate or soon sessile. Margin: Indistinct, distinct, or prominent; external filaments absent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells light yellow, brown, hyaline, or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus thickened, amyloid, entirely amyloid throughout; dehiscence lecanoralean; exoascus hemiamyloid.

Ascospores: 16-32 or more than 32 per ascus, globose, ellipsoid, or oblong, 3-12 µm long, 2-6 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, formed all accross the thallus surface.

Conidiogeneous Cells: Apical. Conidia: Globose, ellipsoid, or fusiform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)

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