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 authentic and standard item. Data set author(s): Knoph J.-G., Rambold G. & Triebel D. (Printzen C.). Data set reviewer(s): Kainz C. (Printzen C.); not to be published after submission; 31.12.2001.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: species. Lecanora. Synonyms: Lecanora piniperda Körb. nom. illeg., Lecanora ochromma Nyl., Lecanora cembricola Nyl., Lecanora effusella Hedl.; Lecanoraceae Körb. (1855); Lecanorineae; Lecanorales.

Taxonomic Literature: Printzen, C. Corticolous and lignicolous species of Lecanora (Lecanoraceae, Lecanorales) with usnic or isousnic acid in the Sonoran Desert region. submitted.

Thallus: Indistinct or crustose, not subdivided (often endosubstratal) parts, granular or areolate (primarily areolate); separate thallus parts thin. Thallus Outline: Simple; soon disappearing or persistent; white. Upper Surface: Verruculose, grey (beige), lime green, or brownish yellow, matt, smooth; special structures absent; epruinose; not wrinkled. Lower Surface: Special structures absent; not rhizinate.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Soon sessile, slightly constricted at the base, .35-.4 mm in diam.. Margin: Lecanorine, verruculose, smooth or rough, not flexuose or slightly flexuose, persistent or excluded, indistinct to distinct to when young prominent, concolourous with the surrounding thallus; without a thin rim between disk and thalline margin. Disk: Plane to weakly convex to rarely strongly convex, brownish yellow to brownish red, pruinose, pruina scarce, without an umbo. Exciple: White to brownish yellow. Amphithecium (thalline excipulum): Present; (50)-(80) µm wide; crystals small, abundant, dissolving in 10% KOH; photobiont sparse to abundant. Amphithecial Cortex: Present, indistinct, (10)-(20) µm wide, (10)-(20) µm wide at the base. Episamma: With episamma; soluble in KOH. Epithecium: Apical cells slightly swollen, hyaline or rarely olive or brown (sordid greenish) or brownish red, soluble in 10% KOH. Hymenium: White; rarely oil inspersed or small inspersed with crystals (from epihymenium). Hypothecium: White; not inspers. Hypothecial Extension: Absent.

Ascospores: c. 8 per ascus, broadly ellipsoid or ellipsoid, (7)-8.7-10.8-(12.5) µm long, (3.5)-4.1-4.8-(5.5) µm wide, obtuse; septa absent; wall thin, 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