Elatinaceae is a family of flowering plants with ca 35 (to perhaps 50) species in two genera:[2] Elatine and Bergia.[3] The Elatine are mostly aquatic herbs, and the Bergia are subshrubs to shrubs.[3] Elatine species are widely distributed throughout the world from temperate to tropical zones, with its greatest diversity found in temperate zones.[3] Bergia is found in temperate to tropical Eurasia and Africa, with two tropical and one tropical to temperate species in the Americas.[3] The center for biodiversity of Bergia is the Old World tropics, and this is also the center for biodiversity for the family.[3] Neither genus is found in arctic ecosystems.[3]