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Lyromma Bat. & Maia (1965)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 3 (A. Aptroot 99-09-27). Lyromma. Genus of unknown placement (incertae sedis); of unknown placement (incertae sedis).

Type Information: Type: Lyromma dolichobelium Bat. & Maia.

Taxonomic Literature: Aptroot A., Diederich P., Sérusiaux E. & Sipman H.J.M., Biblioth. Lichenol. 64: 1-220 [100-101] (1997); Cavalcante W.A., Cavalcante A.A.S.A.S. & Leal F.B., Publ. Inst. Micol. Recife 647: 1-46 (1972); Lücking R., Nova Hedwigia, Beih. 104: 1-179 (1992).

Biogeography: Checklist records: New Guinea.

Ecology: Biotroph; lichenized; epiphyllous.

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

Thallus: Crustose. Upper Surface: Brown 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, soon sessile. Wall: Carbonized around the ostiole, lacking a clypeus, not fused. Margin: External filaments present. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed.

Asci: Dehiscence bitunicate.

Ascospores: c. 8 per ascus, fusiform, 14-17 µm long, 3-4 µm wide; septa present; 3-transversally septate; wall thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, in Lugol's Solution negative, wall not ornamented.

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

Conidiogeneous Cells: Apical. Conidia: Filiform; septate.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)


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