Enterographa Oregonensis (Roccellaceae), a New Foliicolous Species from The Northwest Coast of North America

Abstract A new foliicolous lichen species, Enterographa oregonensis (Ascomycota: Arthoniales: Roccellaceae) is described from temperate coastal North America. It differs from similar, tropical species in its combination of 5(–7)-septate spores, a gelatinous perispore, short lirellae and presence of gyrophoric acid. The ecology of this species is discussed and a conservation assessment is recommended.