Hyperphyscia Müll. Arg. (1894)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Moberg R. (95-11-28); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 8. Hyperphyscia. Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Type Information: Type: Hyperphyscia synthalea (C. Knight) Müll. Arg.; H. adglutinata
(Flörke) H. Mayrhofer ?

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

Special 7: 1-893 [383] (1985); Coppins B.J. in: Purvis O.W. et al.
(eds), The Lichen Flora of Great Britain and Ireland, London (1992);
Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662 [187-
188], Wellington (1985); Hafellner J., Mayrhofer H. & Poelt J.,
Herzogia: 5 39-79 (1979); Moberg R., Symb. Bot. Upsal. 22: 1-108
(1977); Moberg R., Nord. J. Bot. 7: 719-728 (1987); Moberg R. in Nash
T.H. III et al. (eds) Lichen Flora of the Greater Sonoran Desert
Region vol. 1, 221-222, Tempe (2002); Poelt J. & Vezda A.,
Biblioth. Lichenol. 16: 1-390 [166] (1981); Rambold G., Mayrhofer H.
& Matzer M., Pl. Syst. Evol. 192: 31-40 (1994).

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

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

Lichen Photobionts: Primary photobiont present; chlorococcal. Secondary photobiont absent.

Thallus: Crustose or foliose, not subdivided parts, placodioid, lobed. Thallus Outline: Soon disappearing. Upper Surface: Grey or brown; 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 or attached by holdfasts; special structures absent or present:; not pseudocyphellate; not cyphellate; not rhizinate or rhizinate; without thalloconidia thalloconidia; not cavernulate; not 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, soon sessile. Margin: Prominent; external filaments absent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells brown. Hymenium: Iodine reaction: Lugol’s positive. Interascal Hyphae: Present, scarcely branched or distinctly branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus thickened, amyloid, with non-amyloid wide axial body and divergent amyloid flanks towards apex; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, 13-19 µm long, 7-9 µm wide, obtuse; septa present; transversally septate, 1-3-transversally septate; wall thin, thickened at the septum, 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: Apical or intercalar. Conidia: Filiform; aseptate; cell wall hyaline.

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

(report generated 04.Okt.2007)