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Arctopeltis thuleana Poelt

Data Set Maintenance: Data set compiled. Data set author(s): Kainz C. (01-09-26). Data set to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Arctopeltis. Lecanoraceae Körb. (1855); Lecanorales.

Taxonomic Literature: Poelt J., Int. J. Mycol. Lichenol. 1: 143-160 (1983).

Biogeography: Continent: Asia-Temperate, Europe, and Northern America.

Ecology: Biotroph; lichenized; substrate non-calciferous.

Thallus: Crustose, squamulose. Thallus Outline: Persistent; white. Upper Surface: Pale brown or white, glossy (shiny); wrinkled (mostly).

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, forming independently from the host thallus or mycelium, up to.7 mm in diam.. Margin: Lecideine/biatorine, smooth or slightly rough (often beneath hymenium), slightly flexuose, distinct or indistinct. Disk: Excavate (when young) or plane, brown, dark brown, or grey-brown, epruinose. Exciple: Not carbonized. Episamma: Without episamma. Epithecium: Apical cells distinctly swollen (up to 5 µm), pale grey, green, or brown. Hymenium: 50-70 µm high. Interascal Hyphae: Distinctly branched, not or scarcely anastomosed.

Asci: Dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid or oval, 9-14 µm long, 4-6 µm wide; septa absent.

Conidiomata: Present; immersed.

Conidiophores: Vobis-type III (nearly). Conidia: Filiform; 11-17 µm long, .85 µm wide.

Secondary Metabolites: Present, of the following substance class(es): xanthones.

Spot Tests: Upper surface: K + deep yellow, KC + orange.

(report generated 04.Okt.2007)

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