Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

The description has been generated directly from a database. In cases of errors and insufficiencies consult the corresponding LIAS data entry and revision forms to make the necessary modifications. Changes will appear in the subsequent update of data entry forms and natural language descriptions. [To verify the actual status of the pages, select the reload frame function in the context menu!]
These pages are XHTML compatible designed. May be that problems arise with older web browser versions.

Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Triebel D. (98-01-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 4. Polydesmia. Hyaloscyphaceae Nannf. (1932); Leotiales.

Taxonomic Literature: Huhtinen S. & Santesson R., Lichenologist 29: 205-208 (1997); Korf R.P., Mycotaxon 7: 457-492 [470-482] (1978); Raitviir A. & Galán R., Mycotaxon 53: 447-454 (1995).

Ecology: Biotroph or saprobic; fungicolous, lichenicolous, or phytopathogenic; terricolous or epiphyllous.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, soon sessile to substipitate. Margin: Prominent; external filaments present. Exciple: White. Periphyses: Absent. Epithecium: Apical cells grey, hyaline, or brownish yellow. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus thickened, amyloid, with amyloid tube; ocular chamber indistinct; dehiscence unitunicate; exoascus euamyloid, not hemiamyloid.

Ascospores: c. 4 to c. 8 per ascus, ellipsoid, allantoid, curved, or fusiform, 6-24 µm long, 1.5-5.5 µm wide, obtuse or aciculate; septa present; transversally septate, 1-3-transversally septate, formed by the proper spore wall; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.

LIAS Home