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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Koch A. (96-03-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Siphulella. Icmadophilaceae Triebel (1993); Leotiales.

Taxonomic Literature: Kantvilas G., Elix J.A. & James P.W., Bryologist 95: 186-191 (1992); Rambold G., Triebel D. & Hertel H., Biblioth. Lichenol. 53: 217-240 (1993).

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

Thallus: Indistinct or crustose, not subdivided parts, filamentose, subfruticose, or granular. Upper Surface: Green, grey, or yellow; special structures present:; not pseudocyphellate; eciliate; without hairs; isidiate; not 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 or directly at the thallus margin, substipitate to stipitate. Margin: Indistinct; external filaments absent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells hyaline or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus thickened, not amyloid or amyloid, with amyloid cap; dehiscence unitunicate.

Ascospores: c. 8 per ascus, oblong, 9.5-18 µm long, 3.5-6 µm wide, obtuse; septa absent; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

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

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