Xanthoparmelia lavicola (Gyeln.) Hale
Mycotaxon 33: 404 (1988).
Basionym: Parmelia lavicola Gyeln., Reprium nov. Spec. Regni Veg. 36: 157 (1934)
Type: Mexico, La Estrella, environs of Mexico, Amable 600 (BP - lectotype). Designated type in Bouly de Lesdain herbarium destroyed).
Thallus: foliose, adnate on rock, 5-7 cm broad, light yellowish green or darkening; lobes subirregular, 1,5-4 mm wide, contiguous to imbricate; upper surface continuous, emaculate, moderately to densely isidiate, the isidia initially globose to subcylindrical and irregularly inflated at maturity, 0,07-0,1 mm in diameter, 0,1-0,5 mm high, the tips weakly to strongly epicorticate, brownish, more or less erumpent, unbranched to sparsely branched; medulla white; lower surface plane, pale brown, moderately rhizinate, the rhizines pale brown, simple, 0,2-0,5 mm long. Pycnidia rare; conidia bifusiform, 0,5 x 5-6 µm. Apothecia lacking.
Photobiont: Trebouxia.
Chemistry:Psoromic acid, 2'-0-demethylpsoromic acid, usnic acid.
Ecology: On rock.
Molecular data: Genbank
Distribution: Ecuador.