Microtheliopsis Müll. Arg. (1890)

Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Aptroot A. (95-02-95), Lücking R. (95-08-01), and Triebel D. (98-01-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Microtheliopsis. Microtheliopsidaceae O.E. Erikss. (1981); Dothideales.

Type Information: Type: Microtheliopsis uleana Müll. Arg.

Taxonomic Literature: Santesson R., Symb. Bot. Upsal. 12: 1-590 [133-136] (1952).

Biogeography: Checklist records: Guianas.

Ecology: Biotroph; lichenized; epiphyllous.

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Phycopeltis (A. Beck 22-05-97); Trentepohliaceae; Trentepohliales, Ulvophyceae, Eukariota. Secondary photobiont absent.

Thallus: Crustose, not subdivided parts. Upper Surface: Brownish yellow or olive; special structures absent. 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: Perithecioid, orbicular, forming all across the thallus surface, not emerging. Margin: Prominent; external filaments absent. Exciple: Black or brown. Periphyses: Absent. Interascal Hyphae: Absent.

Ascospores: c. 8 per ascus, fusiform, 9-13 µm long, 3-4 µm wide, obtuse; septa present; transversally septate, 3-transversally septate; wall thin, not thickened at the septum, pale brown or dark brown, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)