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Xanthoparmelia constipata (Kurok. & Filson) 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. (04-10-19). Data set not revised; to be published after submission.

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

Type Information: Basionym: Parmelia constipata Kurok. & Filson. Type: Xanthoparmelia constipata (Kurok. & Filson) Elix & J. Johnst.

Taxonomic Literature: Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 215 (1986).

Biogeography: Southern hemispheric (endemic, rather rare). Continent: Australasia. Checklist records: Australia.

Ecology: Biotroph; lichenized; terricolous (or rarely on rock); growing under conditions which are dry (in arid inland W.A., S.A., N.T. and Qld.).

Thallus: Foliose, subdivided into main parts, irregular, lobed; lobes elongate (subirregular to sublinear-elongate), imbricate (sometimes); branches applanate (moderately flattened); separate thallus parts 1-2-(3) mm wide. Thallus Size and Differentiation: 4-5-(7) cm in diameter. Upper Surface: Yellow (pale yellow to yellowish green, often black-margined towards apices), matt or glossy (shiny) (towards apices), rough (slightly rugulose); immaculate; isidiate (dense); isidia cylindrical (robust, epicorticate and ultimately inflated at apices, becoming erumpent), ramified (exentively branched), coralloid (or +/- flattened); not sorediate; lobulate (sometimes developing laciniae towards thallus centre). Lower Surface: Present, brown (pale brown, darker towards lobes apices); attached by holdfasts (adnate); rhizinate; rhizines sparse or moderately abundant, brown (concolorous with lower surface), not branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages (only immature apothecia observed). Ascocarps: Apothecioid (subpedicellate), up to 1 mm in diam.. Margin: Distinct (thick, involute); isidiate.

Conidiomata: Absent resp. not observed.

Secondary Metabolites: Present; throughout the thallus medulla, norlobaridone and usnic acid (other secondary metabolites: constipatic acid, protoconstipatic acid, +/- loxodin, +/- scabrosin 4-acetate 4´-butyrate, +/- scabrosin 4-acetate 4´hexanoate, +/- scabrosin 4,4´-dibutyrate and +/- scabrosin 4,4´-diacetate (trace)).

Spot Tests: Cortex: KC – medulla: K –, C –, KC + pink (rose), PD –.

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

(report generated 04.Okt.2007)

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