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Linhartia Sacc. & P. Syd. (1902)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Lücking R. (95-08-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 4. Linhartia. Solorinellaceae Vezda & Poelt (1989); Ostropales.

Type Information: Type: Trichobelonium punctiforme Rehm (= Linhartia patellarioides (Rehm) Vezda).

Taxonomic Literature: Lücking R. in: Farkas E.+., Lücking R. & Wirth V. (eds), Biblioth. Lichenol. 58: 261-274 [271-273] (1995); Santesson R., Symb. Bot. Upsal. 12: 1-590 [336-338] (1952) - sub Psorotheciopsis; Vezda A., Acta Mus. Silesiae, Opava, Ser. A, 22: 67-90 (1973); Vezda A., Folia Geobot. Phytotax. 14: 43-94 (1979).

Ecology: Biotroph; lichenized; epiphyllous.

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

Thallus: Crustose, not subdivided parts. Thallus Outline: Soon disappearing or persistent. Upper Surface: Grey or white; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent or present:; not pseudocyphellate; not cyphellate; not 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: Distinct to prominent. Exciple: Black or grey. Periphyses: Absent. Epithecium: Apical cells black, brown, hyaline, or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Ascospores: c. 8 per ascus, ellipsoid, oblong, fusiform, or oblong-obtuse, 8-35 µm long, 2-5 µm wide, obtuse; septa present; transversally septate, 1-12-transversally septate; wall thin, not thickened at the septum, laterally constricted where the septum meets the spore wall, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; formed all accross the thallus surface.

Conidia: Curved.

(report generated 04.Okt.2007)

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