Weddellomyces epicallopisma # Lichenicolous fungus. Photographs on thallus of Caloplaca flavescens Widespread in southern England and Wales on the thallus of Variospora flavescens (was Caloplaca flavescens) but only scattered records from elsewhere in Britain and Ireland. Black globose or conical perithecia burst through the host thallus, the cortical layers of the host splitting and often reflexed. Perithecial wall comprised of quadrangular to pentangular plates, visible in a microscope squash. Asci (6-)8 spored, spores 2-3(-5) septate, 24-31 x 9.5(-12) µm, golden-brown and distinctly granulose-verruculose when mature. Microscope photographs below.

Microscope photographs







Weddellomyces epicallopisma #
On Caloplaca flavescens. Holy Rood churchyard, Wool, Dorset. February 2013