Galapagos Species Database

Thallus thin, continuous to rimose, yellowish to pale creamy white; surface smooth, not pruinose; Apothecia prominent to sessile, typically discoid, rarely irregularly ovoid to broadly and shortly lirellate; labia thick, broad, ± blackened; disc expanded, flattened to slightly concave, blackened, but densely covered in a granular brown pruina; exciple increasingly carbonized with age; hymenium hyaline, clear (not inspers), I+ weakly violet or pale grayish blue; ascospores hyaline, or pale brownish with age, I+ bluish violet, 8 per ascus, narrowly ellipsoid, 29-45 x 11-16 µm, muriform, 8-13 vs. 3(-4) celled. Chemistry: No substances found; all spot tests negative.

Because of its conspicuous discoid apothecia embedded in a thick, carbonized exciple not easily confused with other Galapagos species.