Pachystegia and Passiflora, are in the family of Passifloraceae?
Passiflora Passiflora, known also as the passion flowers or passion vines, is a genus of about 500 species of flowering plants, the type genus of the family Passifloraceae.
Elatinaceae Elatinaceae is a family of flowering plants with ca 35 (to perhaps 50) species in two genera: "Elatine" and "Bergia". The "Elatine" are mostly aquatic herbs, and the "Bergia" are subshrubs to shrubs. "Elatine" species are widely distributed throughout the world from temperate to tropical zones, with its greatest diversity found in temperate zones. "Bergia" is found in temperate to tropical Eurasia and Africa, with two tropical and one tropical to temperate species in the Americas. The center for biodiversity of "Bergia" is the Old World tropics, and this is also the center for biodiversity for the family. Neither genus is found in arctic ecosystems.