Isopyrum is a genus of flowering plants of the family Ranunculaceae native to Eurasia and North America.

[1] In 1920, British botanists James Ramsay Drummond and John Hutchinson published a paper, "A Revision of Isopyrum (Ranunculaceae) and Its Nearer Allies", in the Royal Botanic Gardens, Kew's Bulletin of Miscellaneous Information to address problems that had developed within the genus.

[2] Part of the pair's proposed resolution was creating Paraquilegia and expanding the genus Semiaquilegia.

[3]: 46 The Royal Botanic Gardens, Kew's Plants of the World Online (POWO), which recognizes four species, characterized Isopyrum as solely an Eurasian genus.

POWO treats Isopyrum as native to Spain, France, and much of Eastern Europe.

[4] According to the Flora of China, members of Isopyrum are present across Eurasia and in North America.