Heterodermia obscurata (Nyl.) Trevis.
Physcia obscurata Nyl., Annls Sci. nat. Bot. (4) 19: 310 (1863).
Lobes disjunct or adjacent, ± plane, not ascending, with short lateral lobes. Upper surface uneven, sorediate. Soralia labriform, on recurved apices of lobes. Lower surface ecorticate with orange-yellow hyphae overlaying medulla (K+ purple). Apothecia laminal, adnate to subpedicellate, thalline exciple crenulate to sorediate. Ascospores with sporoblastidia, 25-35 × 15-18 µm. Chemistry: Atranorin, zeorin and pigments.
N: Three Kings Is, to Wellington. On bark of coastal trees and shrubs, also on rock and soil in northern coastal habitats.
Cosmopolitan
