Curtis Randall Björk

Lecania madida is a species of saxicolous (bark-dwelling), crustose lichen in the family Ramalinaceae. It occurs in the Pacific Northwest region of Canada and the United States, where it grows in moist habitats. The lichen was formally described as a new species in 2008 by Rikke Reese Næsborg and Curtis Björk. The type specimen was collected from Wells Gray Provincial Park in British Columbia, where it was found in a swamp growing on a hardwood root buttress of Populus trichocarpa. The species epithet madida is derived from the word madidus, meaning "moist" or "wet", and refers to the

Schaereria brunnea is a species of lichen in the family Schaereriaceae, first found in inland rainforests of British Columbia. This rare lichen forms very thin crusts made up of small pale brown patches, each topped with distinctive chocolate-brown barrel-shaped fruiting bodies that distinguish it from other tree-dwelling species in its genus. It was originally known from only three collections made between 1992 and 2007, all found growing on branches of western hemlock trees in ancient, misty forests over five centuries old. It has since been documented in Alaska.

Platismatia wheeleri is a species of foliose lichen in the family Parmeliaceae. Found in western North America, it is characterized by its whitish, smooth thallus and asexual reproduction through soredia. This lichen species is primarily found in western intermontane North America, from southern British Columbia to Washington, Idaho, and Oregon. It has also been discovered in southern California and the Tatra Mountains of Slovakia.

Pertusaria mccroryae is a species of white or greenish-white crustose lichen. It is found in northwestern North America (Alaska, British Columbia, Idaho, Oregon, and Montana), in forests with old trees. It grows from low elevation to 1,700 m (5,600 ft) on the bark of living trees (Picea sitchensis, Thuja plicata, and Tsuga heterophylla) or on logs, and is named in honor of Colleen McCrory, a Canadian environmental activist. The spore size and the chemistry distinguish it from other members of the genus.

Visit the page for more details.

Hypogymnia amplexa is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. It is found in the western United States and Canada.

Visit the page for more details.

Visit the page for more details.

Gyalectaria diluta is a species of crustose lichen in the family Coccotremataceae, first found in inland rainforests of British Columbia. This pale, crust-forming lichen grows on the bark of conifer trees in very humid old-growth forests, where it forms small patches that bleach the underlying bark to whitish or pale green-grey colours. It is found from British Columbia to Montana and Idaho, typically growing on smooth bark of young cedar saplings beneath mature forest canopies that have remained undisturbed for centuries.