Rinodina oleae Baglt.
Rinodina exigua auct. brit. p. max. p.
Rinodina gennarii Baglt. ?
Thallus crustose, relatively thin and continuous, rarely cracked, very variable in color depending on its age and state of hydration, brownish-gray, olive-grey, yellowish-gray, yellowish, olive-colored in dry weather, greenish in humid weather. Apothecia first included in the thallus then sessile, 0.3-0.6 µm in diameter, often very numerous, tight against each other and can cover almost the entire thallus, flat then convex disc, slate color, brown -blackish, blackish, thick thalline rim, persistent, smooth or a little torn or crenate, concolorous to the thallus. Brownish-grey spores, 1-septate, Dirinaria type, 13-16 x 7-10 µm. Pycnidiospores, 4-5 x µm. C-, K-, KC-, P-. A lignicole and nitrophilous species, quite common along the sea on wood (urban furniture, poles, wrecks of wooden boats, etc.).
N.B. This "species" is often synonymized with Rinodina gennarii but we reserve, pending additional studies on these taxa, the name of Rinodina gennarii for a saxicolous or cement taxon and the name of Rinodina oleae for a maritime lignicole taxon with yellow tones or greenish-yellow especially at the thalline edge of the apothecia.