• Caltha Linnaeus, 1753 [Family: Ranunculaceae]
• Caltha P. Miller, 1754 (unaccepted) [Family: Asteraceae]
• Caltha arctica R. Br. accepted as Caltha palustris Linnaeus
• Caltha asarifolia DC. accepted as Caltha palustris Linnaeus
• Caltha biflora DC. accepted as Caltha leptosepala DC.
• Caltha chelidonii Greene accepted as Caltha leptosepala DC.
• Caltha howellii Huth accepted as Caltha leptosepala DC.
• Caltha leptosepala DC.
• Caltha natans Pallas ex Georgi
• Caltha palustris Linnaeus
• Caltha radicans J.R. Forst. accepted as Caltha palustris Linnaeus
• Caltha zetlandica (Beeby) Dorfl. accepted as Caltha palustris Linnaeus
• Calthalotia Iredale, 1929
• Calthalotia arruensis (Watson, 1880)
• Calthalotia baudini (P. Fischer, 1878)
• Calthalotia comtessi (Iredale, 1931)
• Calthalotia indistincta (Wood, 1828)
• Calthalotia modesta (Thiele, 1930)
• Calthalotia mundula (A. Adams & Angas, 1864)
• Calthalotia porteri Iredale
• Calthalotia strigata (A. Adams, 1853)