Xanthoparmelia hybridiza Elix & Johnston
Mycotaxon 29: 364 (1987).
Synonyms: Index Fungorum
Type: xxx.
Thallus: foliose, tightly adnate to adnate, 5-8 cm broad, yellowish green but darkening with age; lobes sublinear-elongate, 1-2 mm wide, contiguous to imbricate; upper surface continuous; emaculate; opaque, transversely cracked with age, isidia and soredia lacking; medulla white; lower surface plane, pale tan to brown but darkening to blackish at lobe tips, moderately to densely rhizinate, the rhizines brown, simple, slender, 0.3-0.6 mm long. Pycnidia common; conidia bifusiform, 0.5 x 5-6 µm. Apothecia well developed, substipitate, 1-4 mm in diameter; spores 5-6 x 7-9 µm.
Photobiont: Trebouxia.
Chemistry: Barbatic acid (major), salazinic acid (major), 4-O-demethylbarbatic acid (trace), norstictic acid (+/- trace), consalazinic acid, usnic acid.
Ecology: On rock.
Molecular data: Genbank
Distribution: Database
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