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: 10 (A. Aptroot 99-09-27). Stirtonia. Arthoniaceae Reichenb. (1841); Arthoniales.

Taxonomic Literature: Awashti D.D. & Singh K.P., Geophytology (India) 1: 97-102 (1972) - sub S. monospora; Makhija U. & Patwardhan P.G., Biovignyanam 13: 43-51 (1987); Santesson R., Symb. Bot. Upsal. 12: 1-590 [59-63] (1952); Vezda A. & Kalb K., Nova Hedwigia 53(1-2): 215-228 [227] (1991).

Biogeography: Checklist records: United States and Canada (continental), Guianas, and Thailand.

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

Thallus: Crustose, not subdivided parts, leprose. Thallus Outline: Soon disappearing or persistent. Upper Surface: Green, grey, or white; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent or present:; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Irregular, forming all across the thallus surface, stromatic. Margin: Indistinct. Periphyses: Absent. Interascal Hyphae: Present, distinctly branched.

Ascospores: c. 8 per ascus, clavate or fusiform, 60-116 µm long, 29-60 µm wide; septa present; transversally septate, 4-15-transversally septate; wall thin, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented.

Secondary Metabolites: Not detected or present, of the following substance class(es): orcinol depsides.

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