Anastrepta orcadensis, also known as Orkney notchwort, is a species of liverwort found in the United States, Canada, and widely in Europe.
Its existence was first discovered on Ward Hill, on the island of Hoy, Orkney, Scotland by William Jackson Hooker in 1808."Bryology (mosses, liverworts and hornworts)" Royal Botanic Garden Edinburgh. Retrieved 15 May 2008."West Highland Mosses And Problems They Suggest" (January 1907) Annals Of Scottish Natural History 61 p. 46. Edinburgh. Retrieved 11 June 2008. 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."Anastrepta orcadensis: Orkney Notchwort" (pdf) sleath.co.uk Retrieved 11 June 2008.
In Alaska, 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