Phaeospora Hepp ex Stein (1879)

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) and Triebel D. (98-01-01; 00-03-04; 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: 12. Phaeospora. Verrucariaceae Zenker (1827); Verrucariales.

Type Information: Type: Phaeospora rimosicola (Leight. ex Mudd) Hepp.

Taxonomic Literature: Alstrup V. & Hansen E.S., Graphis Scripta 12: 41-50 (2001);
Alstrup V. & Olech M., Fragm. Flor. Geobot. 41: 747-752 (1996);
Etayo J., Stud. Bot. 13: 255-257 (1994); Etayo E. & Diederich P.,
Bull. Soc. Naturalistes Luxemb. 97: 93-118 [109] (1996); Hawksworth
D.L., Trans. Brit. Mycol. Soc. 74: 363-386 [380-381] (1980);
Hawksworth D.L., Notes Roy. Bot. Gard. Edinburgh 44: 549-560 (1987);
Hawksworth D.L., Bull. Brit. Mus. (Nat. Hist.), Bot. 14(2): 164 [43-
181] (1985); Horáková J & Alstrup P.V., Graphis
Scripta 6: 61-63 (1994); Kocourková J., Acta Mus. Nat. Pragae,
Ser. B., Hist. Nat. 55(3-4): 59-169 [109] (2000); Kondratyuk S.Ya.
& Zelenko S.D., Ukrayins'k. Bot. Zhurn. 59(5): 598-607 (2002);
Øvstedal D.O. & Hawksworth D.L., Norsk. Polarinst. Skr.
185: 57-60 (1986); Renobales G., Guineana 2: 1-310 [138-139] (1996);
Serusiaux E., Diederich P., Brand A. M. & Van den Boom P.,
Lejeunia 162: 1-95 [65-66] (1999); Triebel D., Biblioth. Lichenol.
35: 1-278 [81, 174, 178, 230] (1989); Triebel D., Sendtnera 1: 273-
274 (1993).

Biogeography: Checklist records: Austria, Germany, Great Britain, Sweden and Norway, and United States and Canada (continental).

Ecology: Biotroph; algicolous (on Lemanea) or lichenicolous; terricolous or corticolous; substrate non-calciferous or calciferous.

Lichen Photobionts: Primary photobiont absent. 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 to soon sessile. Margin: External filaments absent. Exciple: Black or brown. Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid or hemiamyloid. Interascal Hyphae: Absent or present, scarcely branched to distinctly branched, not or scarcely anastomosed. Hypothecium: White, black, brownish yellow, or brown.

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

Ascospores: c. 8 per ascus, ellipsoid, oblong, fusiform, or curved, 10-30 µm long, 3-11.5 µm wide, obtuse or aciculate; septa present; transversally septate, 2-4-transversally septate; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline or pale brown, 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)