Order: Incertae sedis       Family: Mycoporaceae Species: Mycoporum antecellens Growth type crustose. Photos: Ballingeary and Dromore, Co. Cork, SW Ireland. Specimen immediately below identified by Brian Coppins Non-lichenised thallus is whitish, greenish-white or light brown. Usually abundant tiny pycnidia (0.1mm) are intermixed with larger perithecia (0.2-0.4mm diam). Asci 8-spored, spores 1(-3) septate, 27-40 x 7-12 µm, initially colourless but becoming brownish and finely warted. Microscope photographs below. Usually found in old woodlands on smooth bark of Hazel, Beech, Holly and Rowan. Can be locally frequent. Chemical tests negative. Photograph below also shows Arthopyrenia nitescens (pinkish).

Microscope photographs





Mycoporum antecellens. February 2010, January 2012 and August 2024