Paralecanographa grumulosa forme indépendante Atlantique.

            Thallus crustose, very thin to thin, somewhat split or cracked, dirty whitish, greyish-white, greyish. Apothecia generally numerous round, ovoid, amoeba-like or more rarely in the form of lirellae enlarged in the center, arranged and as if placed in relief over the whole thallus, short, unbranched, more or less deformed and very angular with the center wider, 1-2 x 0.5-1.5 mm, disc very open and clearly visible, black but covered with a strong persistent bluish-gray bloom, well marked and raised sinuous rim, smooth and not pruinose, black. Spores long elliptical, hyaline (but may turn brown in age), with a gelatinous layer 1-1.5 µm thick smooth but becoming pitted with granules when fully mature, usually 3-septate but may be 4-5 septate at maturity, 14-23 x 3-5 µm according to the literature; 16-20 x 4.5-5.5 µm according to our measurements. No characteristic color reactions. Saxicolous species growing on calcareous or slightly acidic rocks, wall mortar, slightly calcareous shales, etc. in moist and shady areas.