Scleropyrenium H. Harada (1993)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Keller C. (98-05-20); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Scleropyrenium. Verrucariaceae Zenker (1827); Verrucariales.

Type Information: Type: Scleropyrenium japonicum H. Harada.

Taxonomic Literature: Breuss O., Ann. Naturhist. Mus. Wien 98B Suppl.: 35-50 (1996) - sub Catapyrenium; Harada H., Nat. Hist. Res. 2: 113-152 (1993) - sub Catapyrenium.

Ecology: Biotroph; lichenized; terricolous; substrate calciferous.

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

Thallus: Crustose, not subdivided parts, squamulose. Upper Surface: Brownish yellow; special structures absent. Lower Surface: Attached by holdfasts; special structures present:; not pseudocyphellate; not cyphellate; rhizinate; without thalloconidia thalloconidia; not cavernulate.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Perithecioid, orbicular, forming all across the thallus surface, not emerging. Wall: Not fused. Margin: Indistinct; external filaments absent. Exciple: Black or brown. Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, hemiamyloid. Interascal Hyphae: Absent. Hypothecium: Black or brown.

Asci: Ocular chamber indistinct; dehiscence verrucarial; exoascus not amyloid, not hemiamyloid.

Ascospores: c. 8 per ascus, ellipsoid, 14-18 µm long, 7-7.5 µm wide, obtuse; septa absent; wall thin, 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.

Conidia: Bacilliform or curved.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)