Beckwithia (plant)
Beckwithia is a genus of plants of the family Ranunculaceae. Most botanists consider it synonymous to a clade consisting of Ranunculus glacialis and Ranunculus andersonii. B. glacialis has several distinct forms that may also be considered subspecies or closely related species. However, molecular studies have supported the placement of B. glacialis and B. camissonis within Ranunculus, distant from B. andersonii.
Taxa
Beckwithia andersonii Jeps., Anderson's buttercup, native to the Western United StatesBeckwithia glacialis subsp. glacialis Á.Löve & D.Löve, the glacier buttercup, occurring in boreal and alpine areas of Europe Beckwithia glacialis subsp. alaskensis Jurtz., D. Murray & S. Kelso, Alaskan glacier buttercup, that is endemic in the Kigluaik Mountains of the Seward Peninsula, AlaskaBeckwithia camissonis Tolm., that occurs on either side of the Bering Strait, in Siberia and in Alaska