''Anastrepta orcadensis'', also known as Orkney notchwort, is a

liverwort Liverworts are a group of non-vascular land plants forming the division Marchantiophyta (). They may also be referred to as hepatics. Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry ...

found in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

, and widely in

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

. Its existence was first discovered on Ward Hill, on the island of

Hoy Hoy may refer to: People Given name * Hoy Menear (died 2023), American politician * Hoy Phallin (born 1995), Cambodian footballer * Hoy Wong (1920–2009), American bartender Surname * Hoy (surname), a Scottish and Irish surname * H� ...

Orkney Orkney (), also known as the Orkney Islands, is an archipelago off the north coast of mainland Scotland. The plural name the Orkneys is also sometimes used, but locals now consider it outdated. Part of the Northern Isles along with Shetland, ...

Scotland Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...

William Jackson Hooker Sir William Jackson Hooker (6 July 178512 August 1865) was an English botany, botanist and botanical illustrator, who became the first director of Kew Gardens, Kew when in 1841 it was recommended to be placed under state ownership as a botan ...

in 1808."Bryology (mosses, liverworts and hornworts)"
Royal Botanic Garden Edinburgh. Retrieved 15 May 2008. It is commonly found in the northern hepatic mat on heather-covered slopes, woodland floors and on

scree Scree is a collection of broken rock fragments at the base of a cliff or other steep rocky mass that has accumulated through periodic rockfall. Landforms associated with these materials are often called talus deposits. The term ''scree'' is ap ...

slopes in the

Highlands Highland is a broad term for areas of higher elevation, such as a mountain range or mountainous plateau. Highland, Highlands, or The Highlands, may also refer to: Places Africa * Highlands, Johannesburg, South Africa * Highlands, Harare, Zimbab ...

and occurs elsewhere on the west and north coasts of the

British Isles The British Isles are an archipelago in the Atlantic Ocean, North Atlantic Ocean off the north-western coast of continental Europe, consisting of the islands of Great Britain, Ireland, the Isle of Man, the Inner Hebrides, Inner and Outer Hebr ...

. In

Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...

, it is most abundant on islands near the open sea and on inner islands at elevations above 300 metres (1500 ft)."Anastrepta orcadensis"
sitkanature.org Retrieved 11 June 2008.

References

External links

USDA images of ''Anastrepta orcadensis''
Jungermanniales Flora of Scotland Biota of Orkney {{Bryophyte-stub