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 compiled (Flora of Australia Vol. 55 Lichens-Lecanorales, Parmeliaceae). Data set author(s): Nöske, N. M. @EXCL@ Bungartz F. (06-05-14). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia laxencrustans Elix & J. Johnst. Xanthoparmelia. Synonyms: Parmelia encrustans auct. non Hale = Karoowia perspersa (Stizenb.) Hale; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Xanthoparmelia laxencrustans Elix & J. Johnst. Type: Xanthoparmelia laxencrustans Elix & J. Johnst.; type specimen label data: R. Helms 86; holo: G; iso: MEL.

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (very rare, endemic, in central Australia (N.T. and S.A.)).

Ecology: Lichenized; saxicolous (on sheltered rock ledges with a southerly aspect).

Thallus: Foliose (small-foliose to subcrustose in centre), irregular, lobed; lobes imbricate (contiguous to imbricate, divergent); plane or convex (in places); separate thallus parts.5-.8-(1) mm wide. Thallus Size and Differentiation: 3-6 cm in diameter. Upper Surface: Lime green (pale yellow-green), matt; fissurate (becoming cracked and areolate in older parts of thallus); immaculate; not isidate; not sorediate. Lower Surface: Present, brown or pale brown (somewhat darker towards lobe apices); attached by holdfasts (very tightly adnate); rhizinate (ca. 0.4 mm long); rhizines moderately abundant, brown (concolorous with lower surface) or pale brown, not branched.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile, up to.3 mm in diam.. Disk: Excavate, dark brown.

Secondary Metabolites: Present; usnic acid (other secondary metabolites: hypoprotocetraric acid and +/- 4-O-demethylnotatic acid (trace)).

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