Lecanactis is a genus of crustose lichens, commonly called old wood rimmed lichen. The genus was circumscribed in 1855 by German lichenologist Gustav Wilhelm Körber, who assigned Lecanactis abietina as the type species. The mycobiont (fungus partner) is in the family Roccellaceae. The photobiont is an algae in the genus Trentepohlia.

Conservation

Lecanactis proximans was assessed as Critically Endangered in 2023 for the IUCN Red List. The lichen is known from a single location in the Cerros Orientales (Eastern Hills) of Bogotá, where it is threatened by habitat alteration and deforestation due to urban expansion, industrial development, and agricultural encroachment. The species has not been rediscovered in surveys of remnant forest patches in the area.

Species