Galapagos Species Database

Thallus olive green, usually not black (even when wet), foliose, adnate to ± loose, moderately thick; outline irregular; lobes distinct, elongated, convex, canaliculate below, repeatedly furcate with down-turned and apically broadened ends; surface smooth, dull; isidia absent, sparse or common, globular, swollen, or inflated, with age rarely ± flattened; apothecia occasional to common, sessile to barely stalked, laminal, expanded; disk deep reddish brown, flattened to slightly concave or convex; margin lecanorine, concolorous with thallus, with a broad, densely prosoplectenchymatous outer thalline exciple, and a distinct inner prosoplectenchymatous proper exciple; ascospores ellipsoid to subfusiform, with acute to blunt ends 1(-3) septate, 12-22 x 4-7 µm.

The species can typically be recognized by the convex, narrow, repeatedly branched lobes that are canaliculate below.