Xanthoparmelia dayiana (Elix & Armstrong) Elix & Johnston
in Elix, Johnston & Armstrong, Bull. Br. Mus. nat. Hist., Bot. 15(3): 225 (1986).
Basionym: Parmelia dayiana Elix & P.M. Armstr., Aust. J. Bot. 31(5): 468 (1983).
Synonyms: Index Fungorum
Type: Australia, West Australia, Kalgoorlie, Day, June 1982 (MEL - holotype).
Thallus: tightly adnate to adnate, rather fragile, 2-4 cm broad, dark yellowish green; lobes subirregular to sublinear, 0.5-1.5 mm wide, contiguous to imbricate; upper surface contiguous, emaculate, shiny, moderately isidiate, the isidia short, globose (Figure 14d), 0.1-0.3 mm in diameter. 0.1-0.3 mm high, the tips syncorticate, hollow and erumpent apically, sometimes subsorediate, unbranched; medulla white; lower surface plane, pale brown, moderately rhizinate, the rhizines pale brown, simple, 0.1- 0.3 mm long. Apothecia and pycnidia unknown.
Photobiont: Trebouxia.
Chemistry: Fumarprotocetraric acid, succinprotocetraric acid, protocetraric acid (trace), usnic acid.
Ecology: On rock.
Molecular data: Genbank
Distribution: Database
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