Sarcographina Müll. Arg. (1887)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Aptroot A. (95-02-18) and Sipman H. (98-01-15); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 8. Sarcographina. Graphidaceae Dumort. (1822); Ostropales.

Type Information: Type: Sarcographina cyclospora Müll. Arg.

Taxonomic Literature: Müller J., Flora 70: 423-429 (1887); Redinger K.M., Rev. Bryol. Lichénol. 9: 37-122 (1936).

Ecology: Biotroph; lichenized; corticolous.

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

Thallus: Crustose, not subdivided parts, granular. Upper Surface: Brownish yellow or white; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent.

Medulla: Iodine reaction in Lugol's solution negative; not different with or without KOH pre-treatment (euamyloid).

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Linear, forming all across the thallus surface, not emerging, stromatic. Margin: Indistinct to distinct; external filaments absent. Exciple: Black, 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, scarcely branched, not or scarcely anastomosed.

Asci: Tholus thickened, not amyloid; exoascus not amyloid, not hemiamyloid.

Ascospores: c. 8 per ascus, broadly ellipsoid or globose, 9-35 µm long, 7-12 µm wide, obtuse; septa present; both transversally and longitudinally, 1-9-transversally septate, formed by the endospore wall layer; wall thin, not thickened at the septum, pale brown or dark brown, in Lugol's Solution negative, wall not ornamented.

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

Conidia: Globose.

Secondary Metabolites: Present, of the following substance class(es): ß-orcinol depsidones.

(report generated 04.Okt.2007)