Cercidospora Körb. (1865)

Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Scholz P. (06-06-12, 06-08-07, 07-05-15) and Triebel D. (98-01-01; 01-08-12); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 24. Cercidospora. Synonyms: Neonorrlinia Syd.; genus of unknown placement (incertae sedis); Dothideales.

Type Information: Type: Cercidospora ulothii Körb.

Taxonomic Literature: Alstrup V., Graphis Scripta 8: 25-29 [26-27] (1997); Alstrup V.,
Christensen S.N., Hansen E.S. & Svane S., Fradskaparrit 40: 61-
121 [85-86] (1994); Eriksson O.E., The non-lichenized pyrenomycetes
of Sweden. Lund: 1-208 [7, 25] (1992); Etayo J. & Boom P.P.G. van
den, Nova Hedwigia 81: 157-162 (2005); Grube M. & Hafellner J.,
Nova Hedwigia 51: 283-360 (1990); Hafellner J., Herzogia 7: 353-365
(1987); Hafellner J., Herzogia 9: 749-768 (1993); Hafellner J. & Obermayer W., Cryptog. Bryol. Lichénol. 16(3): 177-190 (1995);
Hoffmann N. & Hafellner J., Biblioth. Lichenol. 77: 1-190 [153-154] (2000); Ihlen P.G., Graphis Scripta 7: 17-24 (1995); Ihlen P.G., Graphis Scripta 8: 33-39 (1997); Ihlen P.G., Lichenologist 30: 27-57
[42-43] (1998); Ihlen P.G. & Wedin M., Lichenologist 39: 1-6 (2007); Kocourková J., Acta Mus. Nat. Pragae, Ser. B., Hist. Nat. 55 (3-4): 59-169 [73-74] (2000); Navarro-Rosinés P., Roux C. & Casares M., Cryptog. Bryol. Lichénol. 16: 99-103 (1995); Navarro-Rosinés P., Calatayud V. & Hafellner J. in: Anonymus (ed.), The Third Symposium IAL 3. Progress and problems in lichenology in the nineties. Abstracts: 121, Salzburg (1996); Navarro-Rosinés P., Calatayud V. & Hafellner J.. – In: Nash T.H. III, Ryan B.D., Diederich P., Gries C. & Bungartz F. (eds.), Lichen flora of the Greater Sonoran Desert Region. Volume II. - 635-639 (2004); Santesson R., The lichens and lichenicolous fungi of Sweden and Norway. Lund: 1-240 [56-57] (1993); Triebel D., Biblioth. Lichenol. 35: 1-278 [86-90] (1989).

Biogeography: Checklist records: Australia, Austria, Bolivia, Germany, Great Britain, Italy, New Zealand, Sonoran Desert, Sweden and Norway, and United States and Canada (continental).

Ecology: Biotroph; algicolous or lichenicolous; terricolous or bryophytic; substrate non-calciferous or calciferous.

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

Thallus: Indistinct.

Medulla: Iodine reaction in Lugol's solution negative; not different with or without KOH pre-treatment (euamyloid).

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Perithecioid, orbicular, not emerging, becoming adnate. Margin: External filaments absent. Exciple: Black, violet, green, olive, or brown. Periphyses: Absent or present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid or hemiamyloid. Interascal Hyphae: Present, scarcely branched to distinctly branched, not or scarcely anastomosed to distinctly anastomosed. Hypothecium: White, green, olive, or brownish yellow.

Asci: Tholus thickened, not amyloid; dehiscence bitunicate; exoascus not amyloid, not hemiamyloid.

Ascospores: 1–2 to c. 8 per ascus, ellipsoid (to soleiform), broadly ellipsoid, oblong, or fusiform, 11-37-(43) µm long, 4-8.5 µm wide, obtuse or aciculate; septa absent or present; transversally septate, 1-7-transversally septate, formed by the proper spore wall; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, not constricted where the septum meets the spore wall or laterally constricted where the septum meets the spore wall, hyaline, in Lugol's Solution negative, wall not ornamented.

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

Conidiogeneous Cells: Apical. Conidia: Bacilliform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)