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: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Texosporium. Caliciaceae Chevall. (1826); family of unknown placement (incertae sedis); Lecanorales.

Type Information: Type: Texosporium sancti-jacobi (Tuck.) Nádv. ex Tibell & Hofsten.

Taxonomic Literature: McCune B. & Rosentreter R., Bryologist 95: 329-333 (1992); Tibell L., Beih. Nova Hedwigia 79: 597-713 (1984).

Biogeography: Checklist records: Sonoran Desert and United States and Canada (continental).

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

Thallus: Crustose, granular. Upper Surface: Green or grey; 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: Perithecioid, orbicular, forming all across the thallus surface, soon sessile. Margin: External filaments absent. Exciple: Brownish yellow. Periphyses: Absent. Hymenium: Mazaedioid. Hypothecium: Black or brown.

Ascospores: 36-44 µm long, 19-26 µm wide, obtuse; septa present; transversally septate, 1-transversally septate; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, dark brown, in Lugol's Solution negative, wall not ornamented.

Secondary Metabolites: Present, of the following substance class(es): pulvinic acid derivatives.

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