Synonyms: Lecanora pallescens A. Massal.; Lecanora pallida var. trachytica A. Massal.; Lecanora sordida var. subcarnea (Lilj.) Th. Fr.; Lecanora trevisanii A. Massal.; Lecidea subcarnea (Lilj.) Ach.; Patellaria massalongiana Trevis.; Patellaria rupicola var. subcarnea (Lilj.) Trevis.; Zeora subcarnea (Lilj.) Arnold
Distribution: N - Ven (Lazzarin 2000b), TAA, Lomb, Piem, VA (Piervittori & Isocrono 1999, Piervittori & al. 2001), Emil (Fariselli & al. 2020). C - Tosc (Tretiach & al. 2008), Laz, Abr (Caporale & al. 2016), Sar (Dickhauser & al. 1995, Nöske 2000, Rizzi & al. 2011). S - Camp (Ricciardi & al. 2000), Cal (Dickhauser & al. 1995, Puntillo 1996), Si.
Description: Thallus crustose, episubstratic, minutely cracked to irregularly verrucose-areolate, yellowish white to grey, often delimited by a white, finbriate prothallus, the areoles flat to convex, smooth or farinose, epruinose or slightly pruinose. Apothecia lecanorine, 0.5-1.5(-2) mm across, at first innate, becoming sessile and constricted at base, with a pale pink to pink-brown, heavily white- or bluish white-pruinose, slightly concave (when young) to convex disc, and a thin, smooth, entire, often finally excluded thalline margin. Thalline exciple ecorticate, rich in algae, with numerous small crystals dissolving in K; proper exciple colourless, with crystals; epithecium yellowish brown to grey-brown, with crystals dissolving in K; hymenium colourless, 60-80(-100) µm high, not inspersed with oil droplets; paraphyses simple or sparingly branched in upper part, 1.5-2 µm thick in lower part, the apical cells to 3.5 µm wide; hypothecium colourless. Asci 8-spored, clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, broadly ellipsoid, 9-14 x 5-8(-10) µm, the wall <1 µm thick. Photobiont chlorococcoid. Spot tests: K- or K+ yellow, C-, KC-, P+ orange turning red, UV-. Chemistry: atranorin (major to traces), chloroatranorin (minor), protocetraric acid (major).
Note: a mild-temperate to Mediterranean species found on steeply inclined to underhanging surfaces of siliceous rocks, mostly below the upper montane belt; it is locally common in Tyrrhenian Italy.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)