Verrucaria cribbii (Verrucariaceae Lichenised Ascomycetes), a new marine lichen from a coral cay

Abstract

Verrucaria cribbii R.W. Rogers was collected from crevices and under boulders of the beach rock on Heron Island, a tropical coral cay. It is characterised by small ascospores, a continuous thallus and emergent hemispherical ascocarps with a thin black involucre around the ostiole.