Order: Verrucariales       Family: Verrucariaceae Species: Bagliettoa baldensis (Verrucaria baldensis) Records now restricted to those confirmed B. baldensis s. str. from sequence data Most material previously recorded as Bagliettoa baldensis now belongs in Bagliettoa parmigera s. lat Uncracked matt white or pale grey thallus with narrow dark prothallus. Abundant small, almost immersed perithecia which leave small pits in thallus when they decay. Ostioles with 3 to 6 radiating cracks (20x lens). Host to Opegrapha rupestris Common, widespread throughout Ireland on hard limestone rocks and memorials and on mortar. Chemical reactions negative.

Bagliettoa baldensis (Verrucaria baldensis). On limestone rocks. The Burren, W Ireland. BLS Burren meeting April 2009