Description: This aquatic Verrucaria has a brown, cracked thallus, prominent discs (perithecia) forming convex projections and large spores (27 x 11.5&

371;m) with a perispore (a feint halo around the spore). It is a species of shaded streams and shallow ravines. In my experience it is a species of siliceous rocks, slates especially. In Ireland, the species is only known from one site in Connemara, County Galway and from County Leitrim. It is probably under-recorded.

Key Identification Features:

• Thallus brown, cracked with conspicuous and prominent perithecia containing large spores, each surrounded by a perispore
• It grows on smooth, sheltered siliceous rocks by fast-flowing streams and along shaded lake margins.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Verrucaria latebrosa at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Verrucaria latebrosa at iNaturalist World Species Observations database.