Polycoccum Saut. ex 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) and Triebel D. (98-01-01, 99-03-19; 00-06-12; 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: 38. Polycoccum. Dacampiaceae Körb. (1855); Dothideales.

Type Information: Type: Polycoccum sauteri Körb. (= Polycoccum trypethelioides (Th. Fr.) R. Sant.).

Taxonomic Literature: Aa H.A. van der, Studies in Mycology 31: 15-22 (1989); Alstrup V.,
Folia Cryptog. Estonica 39: 1-2 (2002); Aptroot A., Diederich P.,
Sérusiaux E. & Sipman H.J.M., Biblioth. Lichenol. 64: 1-
200 [141] (1997); Atienza V., Calatayud V. & Hawksworth D.L.,
Lichenologist 35(2): 125-135 (2003); Calatayud V. in Nash T.H. et al.
(eds), Lichen flora of the Greater Sonoran Desert Region vol. 2, 684-
686, Tempe (2004); Calatayud V. & Rambold G., Lichenologist
30(3): 231-244 (1998); Calatayud V. & Rico V.J., Mycotaxon 53: 29-
32 (1995); Etayo J., Bull. Soc. Linn. Provençe 47: 93-110 [105-
106] (1996); Etayo J. & Diederich P., Lichenologist 30(2): 103-
120 (1998); Hawksworth D.L., Lichenologist 26: 337-347 [340-344]
(1994); Hawksworth D.L. & Diederich P., Trans. Brit. Mycol. Soc.
90: 293-312 [283] (1988); Hawksworth D.L. & Miadlikowska J.,
Mycol. Res. 101(9): 1127-1134 (1997); Kocourková J., Acta Mus.
Nat. Pragae, Ser. B., Hist. Nat. 55 (3-4): 59-169 [111-113] (2000);
Kocourková J. & Berger F., Czech Mycol. 51: 171-177
(1999); Martínez Moreno M.I., Ruzia 15: 1-200 [172-173]
(1999); Matzer M., Mycol. Pap. 171: 1-202 [142-146] (1996); Navarro
Rosinés P., Els liquens i els fongs lichenicoles dels
substrats carbonatats de Catalunya meridional. Tesis Doctoral ined.,
Univ. Barcelona: 1-459 [275-262] (1992); Navarro-Rosinés P.
& Roux C., Bull. Soc. Linn. Provençe 41: 143-150 (1990);
Navarro-Rosinés P. & Roux C., Mycotaxon 59: 327-337
(1998); Renobales G., Guineana 2: 1-310 [151-152, 261] (1996); Roux
C. & Triebel D., Bull. Soc. Linn. Provençe 45: 451-542
[518-519] (1994); Triebel D., Biblioth. Lichenol. 35: 1-278 [231-234]
(1989); Triebel D., Rambold G. & Nash III T.H., Mycotaxon 42: 263
296 [283] (1991); Váczi P. & Hawksworth D.L.,
Lichenologist 33(6): 513-517 (2001); Vezda A., Ceská Mykol.
23: 104-109 (1969); Vezda A., Ceská Mykol. 24: 220-229 (1970);
Zhurbenko M.P. & Alstrup V., Acta Univ. Upsal. Symb. Bot. Upsal.
34(1): 477-499 (2004).

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

Ecology: Biotroph; lichenicolous; terricolous, bryophytic, corticolous, or epiphyllous; 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: Absent. Hymenium: Iodine reaction: Lugol’s negative or Lugol’s positive, not hemiamyloid or hemiamyloid. Interascal Hyphae: Present, scarcely branched to distinctly branched, not or scarcely anastomosed to distinctly anastomosed. Hypothecium: Brown.

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

Ascospores: 1–2 to c. 8 per ascus, ellipsoid, broadly ellipsoid, ovoid, oblong-obtuse, or fusiform, 9-44 µm long, 3-18 µm wide, obtuse or aciculate; septa absent or present; transversally septate, 1-2-transversally septate, formed by the proper spore wall; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, pale brown or dark brown, in Lugol's Solution negative, wall not ornamented or ornamented.

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

Conidiogeneous Cells: Apical. Conidia: Globose or bacilliform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)