Francis' lichen  (Zamenhofia rosei)

Facts

Kingdom Fungi
Phylum Ascomycota
Class Ascomycetes
Order Pyrenulales
Family Trichotheliaceae
Genus Zamenhofia (1)
Size Fruiting-body diameter: 0.2 - 0.3 mm (2)

Status

Classified as Near Threatened in Great Britain (3).