A new species of Cresponea (Roccellaceae, Ascomycota) from Gough Island
Elix, John A.; Øvstedal, Dag O.; Gremmen, Niek J.M.
The new species, Cresponea sorediata Elix, Øvstedal & Gremmen, based on material from Gough Island, is described. It is characterized by a sorediate thallus, but no apothecia has been found. The diagnostic substances of the new species are usnic acid, isousnic acid and consimonyellin.