Abrothallaceae Abrothallus bertianus # Lichenicolous fungus. Photographs on Melanohalea exasperata Infrequent but possibly overlooked on the thalli of Melanelixia and Melanohalea species. Dark-brown to blackish apothecia, slightly domed to nearly spherical in shape. Asci 8-spored, spores 1-septate, 10.5–15 x (4–)4.5–6(–7) µm, greenish becoming brown. Microscope photographs below. Similar: Abrothallus parmeliarum on Parmelia, Abrothallus prodiens on Hypogymnia

Microscope photographs



Abrothallus bertianus #
On Melanohalea exasperata. Studland, Dorset. November 2013