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): Rambold G. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 1. Arthrosporum. Biatoraceae A. Massal. ex Stiz. (1862); Lecanorineae; Lecanorales.

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

Lichen Photobionts: Primary photobiont present; chlorococcal. Secondary photobiont absent.

Thallus: Crustose, granular. Upper Surface: Grey or white; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, soon sessile. Margin: Indistinct; external filaments absent. Periphyses: Absent. Interascal Hyphae: Present, not or scarcely anastomosed. Hypothecium: Olive.

Asci: Tholus thickened, amyloid, with non-amyloid narrow axial body and amyloid convergent flanks towards apex; dehiscence lecanoralean.

Ascospores: c. 8 to 12-16 per ascus, ellipsoid, oblong, or reniform, obtuse; septa present; transversally septate, 3-transversally septate; 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