Galapagos Species Database

Thallus thin, continuous to rimose, yellowish to pale creamy white; surface smooth, not pruinose, corticate; Apothecia fissurate, i.e., forming thin, sparsely branched slits; labia inconspicuous or absent, surrounded by a papery thin, ±tiled thallus layer, often with a fine white pruina inside (dumasti-type sensu Staiger 2002); disc concealed to slightly irregularly expanded; exciple thin, poorly developed, not carbonized; hymenium hyaline, clear (not inspers), I–; ascospores hyaline, I+ reddish orange, narrowly ellipsoid, 10-17 x 5-6 µm, transversely septate, 4-celled. Chemistry: Stictic acid and related substances; P+ orange, K+ yellow.

The single specimen known from Galapagos agrees well with the description provided here; the genus contains many poorly resolved species and more material should be examined.