Mycoporum Flot. ex Nyl. (1855)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Aptroot A., Triebel D. (00-03-14), and Scholz P. (02-05-15); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 5. Mycoporum. Xanthopyreniaceae Zahlbr. (1926); Pyrenulales.

Type Information: Type: Mycoporum elabens Flot. ex Nyl.

Taxonomic Literature: Taxonomic notes: including Cyrtidula quercus and C. hippocastani. Aptroot A., Lichenologist 30: 501-514 (1998); Aptroot A. in: Nash T.H. III et al. (eds) Lichen Flora of the Greater Sonoran Desert Region vol. 1, 287-288, Tempe (2002); Aptroot A., Diederich P., Sérusiaux E. & Sipman H.J.M., Biblioth. Lichenol. 64: 1-220 [111-112] (1997); Coppins B.J. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain and Ireland, London (1992); Harris R.C., More Florida Lichens: 1-192 (1995).

Biogeography: Checklist records: Austria, Germany, Great Britain, Guianas, Italy, New Guinea, Sonoran Desert, and United States and Canada (continental).

Ecology: Saprobic or rarely biotroph; rarely lichenized; corticolous; substrate non-calciferous.

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

Thallus: Indistinct or crustose. Upper Surface: Special structures absent. Lower Surface: Special structures absent.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Perithecioid, orbicular or irregular, forming all across the thallus surface, soon sessile. Wall: With a carbonized black clypeus around the ostiole (clypeus not prominent). Margin: External filaments absent. Exciple: Black or brown. Periphyses: Absent. Interascal Hyphae: Absent or present, distinctly branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus not amyloid; dehiscence bitunicate; exoascus not amyloid.

Ascospores: c. 8 per ascus, ellipsoid, ovoid, or clavate, 10-18 µm long, 4.5-7 µm wide, obtuse; septa present; transversally septate or both transversally and longitudinally, 3-5-transversally septate, formed by the proper spore wall; wall thin, not thickened at the septum, laterally constricted where the septum meets the spore wall, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)