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Xanthoparmelia rubrireagens (Gyeln.) Hale

Data Set Maintenance: Data set compiled (Flora of Australia Vol. 55 Lichens-Lecanorales, Parmeliaceae). Data set author(s): Nöske, N. M. @EXCL@ Bungartz F. (06-05-29). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia rubrireagens (Gyeln.) Hale. Xanthoparmelia. Synonyms: Parmelia rubrireagens Gyeln.
(Xanthoparmelia eradicata auct. non (Nyl. ex Cromb.) Hale;
Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia rubrireagens Gyeln. Type: Parmelia rubrireagens Gyeln.; type specimen label data: W. W. Watts 90; holo: BP.

Taxonomic Literature: Phytologia 28: 488 (1974).

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (relatively common, in the ranges of southern and eastern Australia (Qld, N.S.W., A.C.T., Vic. and Tas.)) and New Zealand.

Ecology: Lichenized; saxicolous.

Thallus: Foliose, isotomic-dichotomous (subdichotomously branched, divaricate in places), lobed; lobes elongate or linear, ascending (becoming suberect, exposing lower surface); plane; separate thallus parts.5-1-(1.5) mm wide. Thallus Size and Differentiation: 6-10 cm in diameter. Upper Surface: Lime green (blackening with age, margins black), glossy (shiny), smooth; immaculate; not isidate; not sorediate. Lower Surface: Present, black (mostly jet black); attached by holdfasts (very loosely adnate); wrinkled; not rhizinate or rhizinate; rhizines sparse (very sparse), black, not branched (+/- tufted).

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Soon sessile, 1-3 mm in diam.. Margin: Indistinct to distinct (thalline exciple thick and involute, becoming thin and crenulate). Disk: Excavate, brown (chestnut brown; darkening with age).

Ascospores: 7-8 µm long, 5-6 µm wide.

Conidiomata: Present (common).

Conidia: Bifusiform; 4-5 µm long; .5 µm wide.

Secondary Metabolites: Present; consalazinic acid, norstictic acid (trace), salazinic acid, and usnic acid.

Spot Tests: Cortex: KC – medulla: K + yellow changing to red, C –, PD + orange (orange-red).

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

(report generated 04.Okt.2007)

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