Xanthoparmelia flavescentireagens (Gyeln.) D.J. Galloway
N.Z. Jl Bot. 18, 4: 533 (1981).
Basionym: Parmelia flavescentireagens Gyeln., Reprium nov. Spec. Regni veg. 34: 154 (1934).
Synonym: Index Fungorum
Type: Australia, New South Wales (A.C.T.), Booroomba Rocks, Australia, Barker s.n. (BP - lectotype).
Thallus: adnate to loosely adnate, rarely also on soil, rather firm but usually breaking apart when collected, 4-10 cm broad, light yellowish green or darkening with age; lobes variable, subirregular to sublinear, 1-3 mm wide, nearly separate to imbricate, sometimes elongatelaciniate, the laciniae 0,2-0,5 mm wide, at times subterete, prostrate to subascending; upper surface continuous, emaculate, shiny, isidia and soredia lacking; medulla white; lower surface plane to vaguely subcanaliculate, smooth to rugose, brown, often darkening in the marginal zone, sparsely to moderately rhizinate, the rhizines pale brown or darkening, simple, 0,2-1 mm long. Pycnidia common, conidia bifusiform, 0,5 / 6-7µm . Apothecia common, substipitate, 2-8 mm in diameter; spores 4x 8-9µm.
Photobiont: Trebouxia.
Chemistry: Norlobaridone, loxodin, scabrosin 4,4'-diacetate (+-), scabrosin 4- acetate-4-butyrate (+-), scabrosin 4-acetate-4'-hexanoate (+-), scabrosin 4,4'-dibutyrate (+-), conloxodin (+-), conorlobaridone (+-), usnic acid.
Ecology: On rock.
Molecular data: Genbank
Distribution: Peru. Database
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