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Xanthoparmelia boonahensis Elix & J. Johnst.

Data Set Maintenance: Data set compiled (Flora of Australia Vol. 55 Lichens-Lecanorales, Parmeliaceae). Data set author(s): Nöske, N. M. @EXCL@ Clerc, P. (04-10-02). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous. Taxonomic rank: species. Currently accepted name Xanthoparmelia boonahensis Elix & J. Johnst. Xanthoparmelia. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Xanthoparmelia boonahensis Elix & J. Johnst. Type: Xanthoparmelia boonahensis Elix & J. Johnst.

Taxonomic Literature: Mycotaxon 33: 354 (1988).

Biogeography: Southern hemispheric (endemic, at present only known from the type locality). Continent: Australasia. Checklist records: Australia.

Ecology: Biotroph; lichenized; saxicolous.

Thallus: Foliose, subdivided into main parts, dispersed throughout and distinctly seperate, lobed; lobes linear (sublinear); branches irregular; separate thallus parts.8-2 mm wide. Thallus Size and Differentiation: 2-3 cm in diameter; apex rounded (subrotund). Upper Surface: Lime green (pale), plane, glossy (shiny), smooth; immaculate; not isidate; not sorediate. Lower Surface: Present, brown (pale brown to dark brown); rhizinate; rhizines moderately abundant, brownish yellow (yellow brown to black), not branched.

Medulla: White (mostly white with a distinct yellow-orange zone adjacent to lower cortex).

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile, .5 mm in diam.. Margin: Smooth, distinct (thick and involute). Disk: Excavate, brown.

Ascospores: 8-9 µm long, 5-6 µm wide.

Conidiomata: Present.

Conidia: Bifusiform; 5-7 µm long; 1 µm wide.

Secondary Metabolites: Present; barbatic acid, skyrin (skyrin in the pigmented medulla; other secondary metabolites:4-O-demethylbarbatic acid (minor), constipatic acid (trace) and protoconstipatic acid (trace)), and usnic acid.

Spot Tests: Cortex: KC – medulla: K – (pigmented medulla K+ violet), C –, KC + yellow, PD –.

UV-Fluorescence: Upper thallus surface – (negative).

(report generated 04.Okt.2007)

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