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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. (06-05-17). Data set not revised; to be published after submission.

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

Type Information: Basionym: Parmelia nana Kurok. Type: Parmelia nana Kurok.; type specimen label data: S. Nakanishi 1; holo: TNS.

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (rare, endemic, in the Darling Range of south-western W.A.).

Thallus: Foliose (small-foliose becoming almost subcrustose towards centre, forming +/- small rosettes), irregular, lobed; lobes imbricate (contiguous to imbricate); plane (marginal lobes); separate thallus parts.7-2 mm wide. Thallus Size and Differentiation: 3-6 cm in diameter; apex rounded. Upper Surface: Lime green (darkening), plane (flat to slighty convex) or convex, matt; fissurate (older lobes fractured and areolae commonly formed); fissures transversely oriented or not particularly oriented oriented; immaculate; not isidate; not sorediate. Lower Surface: Present, brown (tan to brown); attached by holdfasts (adnate to tightly adnate); rhizinate (short, 0.1 mm long); rhizines sparse, pale brown, not branched.

Reproduction Strategy: With sexual (and possible asexual) stages (subpedicellate). Ascocarps: Apothecioid, 1-2 mm in diam.. Margin: Crenulate (+/- crenulate), smooth, indistinct. Disk: Excavate, dark brown.

Conidia: Bacilliform or bifusiform (subbifusiform); 5-6 µm long; .5 µm wide.

Secondary Metabolites: Present; 4-O-demethylbarbatic acid, barbatic acid, consalazinic acid, diffractaic acid, norstictic acid, protocetraric acid, salazinic acid, and usnic acid (other secondary metabolites: constipatic acid (trace) and protoconstipatic acid (trace)).

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

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