Verrucaria juglandis

About

Verrucaria juglandis is a species of corticolous (bark-dwelling) crustose lichen in the family Verrucariaceae. It was described in 2016 from material collected on Persian walnut roots along a riverbank in Armenia, where it grows in a unique riparian habitat. The species is characterised by its narrow ascospores and distinctive half-cap covering over its fruiting bodies, distinguishing it from related rock-dwelling species.

Summary from Wikipedia