Trematosphaeriopsis Elenkin (1901)

Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Abrothallus (Trematosphaeriopsis). Genus of unknown placement (incertae sedis); Dothideales.

Type Information: Type: Trematosphaeriopsis parmeliana (Jacz.) Elenkin.

Taxonomic Literature: Hafellner J., Mycotaxon 80: 381-387 (2001);.

Biogeography: Checklist records: Austria, Italy, and United States and Canada (continental).

Ecology: Biotroph; lichenicolous; substrate non-calciferous or calciferous.

Lichen Photobionts: Primary photobiont absent.

Thallus: Indistinct.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, orbicular, not emerging. Wall: Not carbonized, not fused. Margin: Prominent; external filaments absent. Exciple: Pale brown or white. Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

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

Ascospores: c. 8 per ascus, narrowly ellipsoid, (22)-24-28-(31) µm long, 4-6-(7) µm wide, aciculate; septa present; transversally septate, 3-transversally septate, formed by the proper spore wall; wall not thickened at the septum, not constricted where the septum meets the spore wall, hyaline (sometimes slightly yellowish), in Lugol's Solution negative, wall ornamented (with tiny hyaline warts).

Conidiomata: Absent resp. not observed or present; pycnidial; immersed.

Conidiogeneous Cells: Apical. Conidia: Bacilliform; microconidial, not branched; aseptate; up to 0-septate; cell wall hyaline.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)