Uncommon. On pohutukawa (Metrosideros excelsa) tree near trunk base.

Medulla K+ dark yellow, UV-; thallus large (300 mm diameter), UV-, greenish grey when moist, greyish white when dry, smooth, without reticulate cracking, very faintly white-maculate near lobe margins, lobe margins virtually glabrous, but sparsely ciliate in lobe axils and sinuses; sorediate (white, granular), soralia short, on small marginal laciniae, sorediate laciniae convolute; lower surface with broad, smooth, naked pale brown margin, otherwise more or less densely rhizinate, rhizines simple, black.