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Data Set Maintenance: Data set compiled (Flora of Australia Vol. 55 Lichens-Lecanorales, Parmeliaceae). Data set author(s): Nöske, N. M. @EXCL@ Bungartz F. (06-06-01). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia streimannii (Elix & P. M. Armstr.) Elix & J. Johnst. Xanthoparmelia. Synonyms: Parmelia streimannii Elix & P. M. Armstr.; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia streimannii Elix & P. M. Armstr. Type: Parmelia streimannii Elix & P. M. Armstr.; type specimen label data: J. A. Elix 8977 & H. Streimann; holo: MEL.

Biogeography: Southern hemispheric; coastal. Continent: Australasia. Checklist records: Australia (scattered in costal areas and adjacent ranges in southern and eastern Australia (W.A., S.A., Qld, N.S.W., A.C.T., Vic. and Tas.); also on Three Kings Is. in far northern New Zealand) and New Zealand.

Thallus: Foliose, irregular, lobed; lobes elongate or linear (sublinear), imbricate (or not; radiating); plane; separate thallus parts.5-1.5-(2) mm wide. Thallus Size and Differentiation: 4-7 cm in diameter. Upper Surface: Lime green (darkening with age), matt; fissurate; immaculate; isidiate; isidia cylindrical, ramified (becoming extensively branched), coralloid; not sorediate. Lower Surface: Present, pale brown (becoming darker near lobe apices); attached by holdfasts; rhizinate; rhizines moderately abundant, brown, not branched.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile, up to 5 mm in diam.. Margin: Isidiate. Disk: Excavate to plane (becoming +/- flat), dark brown.

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

Spot Tests: Cortex: KC – medulla: K + yellow changing to red, C –, KC –, PD + deep yellow.

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