Splanchnonema Corda (1829)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Aptroot A. (95-02-10); revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 35. Splanchnonema. Pleomassariaceae M.E. Barr (1979); Pleosporales.

Type Information: Type: Splanchnonema pustulatum Corda (= Splanchnonema foedans (Fr.) Kuntze).

Taxonomic Literature: Aptroot A., Biblioth. Lichenol. 44: 1-178 (1991); Barr M.E., Mycotaxon 15: 349-383 (1982); Barr M.E., Mycotaxon 49: 129-142 (1993).

Ecology: Saprobic; corticolous.

Lichen Photobionts: Primary photobiont absent. Secondary photobiont absent.

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. Margin: Indistinct; external filaments absent. Periphyses: Absent. Interascal Hyphae: Present, distinctly branched, not or scarcely anastomosed to distinctly anastomosed.

Asci: Tholus thickened, not amyloid; dehiscence bitunicate.

Ascospores: c. 8 per ascus, oblong or fusiform, 20-100 µm long, 7-30 µm wide, obtuse; septa present; transversally septate or both transversally and longitudinally, 1-20-transversally septate; wall thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, laterally constricted where the septum meets the spore wall, dark brown, in Lugol's Solution negative, wall not ornamented.

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

Conidiogeneous Cells: Apical. Conidia: Fusiform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)