Xanthoparmelia hypomelaenoides Elix & Johnston
in Elix, Johnston & Armstrong, Bull. Br. Mus. nat. Hist., Bot. 15(3): 263 (1986).
Synonyms: Index Fungorum
Type: xxx.
Thallus: foliose, adnate, 3-7 broad, pale yellowish green or darkening with age; lobes subirregular, 1-2.5 mm wide, short and irregularly branched, apically rotund, in part subascending, subrevolute, separate to subimbricate; upper surface continuous, emaculate, dull, becoming strongly rugulose with age, transversely cracked; medulla white; lower surface plane, black, sparsely to moderately rhizinate, the rhizines black, brown at the tips, simple, robust, 0.2-0.4 mm long. Pycnidia common; conidia bifusiform, 0.5 x 4-5 µm. Apothecia lacking.
Photobiont: Trebouxia.
Chemistry: Fumarprotocetraric acid, succinprotocetraric acid, protocetraric acid (trace), usnic acid.
Ecology: on rock.
Molecular data: Genbank
Distribution: Database
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