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Encephalographa A. Massal. (1854)

Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Triebel D. (98-01-01; 99-07-20); revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Encephalographa. Hysteriaceae Chevall. (1826); Dothideales.

Type Information: Type: Encephalographa elisae A. Massal.

Taxonomic Literature: Taxonomic notes: Type species regarded as lichen by Tretiach & Modenesi (1999) - not as a lichenicolous fungus! Aptroot A., Diederich P., Sérusiaux E. & Sipman H.J.M.,Biblioth. Lichenol. 64: 1-220 [60-63] (1997); Redinger K.M., Rabenh. Kryptog.-Fl. 9, 2(1): 181-404 [224-225] (1939); Renobales G. & Aguirre B., Syst. Ascomycetum: 87-92 (1990); Tretiach, M. & Modenesi, P., Nova Hedwigia 68: 527-544 (1999).

Biogeography: Checklist records: Great Britain, Italy, New Guinea, and New Zealand.

Ecology: Substrate calciferous.

Lichen Photobionts: Primary photobiont absent. Primary photobiont taxonomy: Trentepohlia; Trentepohliaceae; Trentepohliales. Secondary photobiont absent.

Thallus: Indistinct or crustose. Upper Surface: Grey or grey-yellow.

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: Apothecioid or perithecioid, irregular or linear, becoming adnate to soon sessile. Margin: Prominent; external filaments absent. Exciple: Black, brown, or green. Periphyses: Absent. Epithecium: Apical cells brown or green. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched to distinctly branched, distinctly anastomosed. Hypothecium: Brown, white, or brownish yellow.

Asci: Tholus thickened, not amyloid; ocular chamber broad; dehiscence bitunicate; exoascus not amyloid, not hemiamyloid.

Ascospores: c. 8 per ascus, ellipsoid, ovoid, or reniform, 12-18 µm long, 4-9 µm wide, obtuse; septa present; transversally septate, 1-transversally septate; wall thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented or ornamented.

Conidiomata: Absent resp. not observed or present.

Conidia: Ellipsoid or bacilliform; microconidial or macroconidial, not branched; aseptate; cell wall hyaline.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)

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