Botanische Staatssammlung München © 1995–2008
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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 16. Porpidia. Porpidiaceae Hertel & Hafellner (1984); Cladoniineae; Lecanorales.

Taxonomic Literature: Clauzade G. & Roux C., Bull. Soc. Bot. Centre-Ouest N.S. - Numero
Special 7: 1-893 [632-637] (1985); Galloway D.J., Flora of New
Zealand Lichens: i-lxxiii, 1-662 [185-187], Wellington (1985) - sub
Huilia; Galloway D.J. & Coppins B.J. in: Purvis O.W. et al.
(eds), The Lichen Flora of Great Britain and Ireland, London (1992);
Gowan S.P., Bryologist 92: 25-59 (1989); Hertel H., Mitt. Bot.
Staatssamml. München 21: 307-337 (1985); Hertel H. & Knoph
J.G., Mitt. Bot. Staatssamml. München 20: 476-488 (1984); Inoue
M., J. Jap. Bot. 58: 113-128 (1983) - sub Huilia; Rambold G.,
Biblioth. Lichenol. 34: 1-346 (1989); Schwab A.J., Mitt. Bot.
Staatssamml. München 22: 221-476 (1986).

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

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Asterochloris (A. Beck 22-05-97); Trebouxiaceae; Trebouxiales, Trebouxiophyceae, Eukariota. Secondary photobiont absent.

Thallus: Crustose, not subdivided parts, granular, rimose, or areolate (primarily areolate). Upper Surface: Grey, yellow, red, white, brownish yellow, or orange; 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; 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: Distinct to prominent; external filaments absent. Exciple: Black, grey, brown, white, brownish yellow, or orange. Periphyses: Absent. Epithecium: Apical cells green, brown, olive, brownish yellow, or orange. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed. Hypothecium: Black, grey, brown, white, brownish yellow, or orange.

Ascospores: c. 8 per ascus, broadly ellipsoid or ellipsoid, 9-26-(33) µm long, 4-12-(14) µm wide, obtuse; septa absent; wall thick, distinctly differentiated into primary and secondary wall, 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.

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

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