Anastrepta orcadensis

Anastrepta orcadensis, also known as Orkney Notchwort, is a liverwort found in the United States, Canada, and widely in Europe.[1]

Its existence was first discovered on Ward Hill, on the island of Hoy, Orkney, Scotland by William Jackson Hooker in 1808.[3][4] It is commonly found in the northern hepatic mat on heather-covered slopes, woodland floors and on scree slopes in the Highlands and occurs elsewhere on the west and north coasts of the British Isles.[5]

In Alaska, it is most abundant on islands near the open sea and on inner islands at elevations above 300 metres (1500 ft).[6]