Xanthoparmelia immutata Elix & Johnston
in Elix, Johnston & Armstrong, Bull. Br. Mus. nat. Hist., Bot. 15(3): 266 (1986).
Synonyms: Index Fungorum
Type: Australia, N.T., 3 km S of Barrow Creek along Stuart Highway, Elix 11209 (CBG - holotype).
Thallus: tightly adnate, 2-8 cm broad, dark yellowish green; lobes sublinear, 0.2-1 mm wide, short, crowded, contiguous to imbricate; upper surface continuous, emaculate, shiny, moderately to densely isidiate, the isidia initially subglobose, cylindrical at maturity, 0.06-0.12 mm in diameter, 0.1-0.3 mm high, the tips syncorticate, blackening, becoming branched; medulla white; lower surface plane, pale brown, moderately rhizinate, the rhizines pale brown, simple, 0.1-0.4 mm long. Pycnidia lacking. Apothecia rare, adnate, about 1 mm in diameter; spores 5-6 x 10-11 µm (Hale 1990: 128).
Photobiont: Trebouxia.
Chemistry: Scabrosin 4-acetate-4'-hexanoate, scabrosin 4-acetate-4'-butyrate, scabrosin 4,4'-dibutyrate, scabrosin, 4,4'-diacetate (+), constipatic acid, protoconstipatic acid, usnic acid (Hale 1990: 128).
Ecology: On rock.
Molecular data: Genbank
Distribution: Database
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