Trapeliopsis Hertel & Gotth. Schneid. (1980)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Lumbsch H. T. (98-03-19); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 12. Trapeliopsis. Agyriaceae Corda (1838); Agyriineae; Lecanorales.

Type Information: Type: Trapeliopsis wallrothii (Flk. ex Spreng.) Hertel & Gotth. Schneid.

Taxonomic Literature: Aptroot A., Diederich P., Sérusiaux E. & Sipman H.J.M.,
Biblioth. Lichenol. 64: 1-220 [198] (1997);Clauzade G. & Roux C.,
Bull. Soc. Bot. Centre-Ouest N.S. - Numero Special 7: 1-893 [759-761]
(1985); Coppins B.J. & James P.W., Lichenologist 16: 254-257
(1984); Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662
[584-585], Wellington (1985); Lumbsch H.T., J. Hattori Bot. Lab. 83:
1-73 (1997); Lumbsch H.T., Kashiwadani H. & Streimann H., Pl.
Syst. Evol. 185: 285-292 (1993); Poelt J. & Vezda A., Biblioth.
Lichenol. 16: 1-390 [334] (1981); Purvis O.W. in: Purvis O.W. et al.
(eds), The Lichen Flora of Great Britain and Ireland, London (1992);
Schneider G., Biblioth. Lichenol. 13: 1-291 (1979).

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

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

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

Thallus: Crustose, squamulose, granular, rimose, or areolate (primarily areolate). Upper Surface: Grey, green, brown, white, olive, or brownish yellow; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate or isidiate; not sorediate or sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by the whole lower surface; special structures absent.

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, becoming adnate to soon sessile. Margin: Indistinct to prominent; external filaments absent. Exciple: Brown, white, or brownish yellow. Periphyses: Absent. Epithecium: Apical cells brown or brownish yellow. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed. Hypothecium: Brown, white, brownish yellow, or orange.

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

Ascospores: c. 8 per ascus, ellipsoid, 7-14 µm long, 2.5-6 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.

Conidia: Filiform or bacilliform.

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

(report generated 04.Okt.2007)