Berberidaceae

The Berberidaceae are a family of 18 genera of flowering plants commonly called the barberry family. This family is in the order Ranunculales. The family contains about 700 known species, of which the majority are in "Berberis". The species include trees, shrubs and perennial herbaceous plants.
Genera.
The APG IV system of 2016 recognises the family and places it in the order Ranunculales in the clade eudicots.
In some older treatments of the family, Berberidaceae only included four genera ("Berberis, Epimedium, Mahonia, Vancouveria"), with the other genera treated in separate families, Leonticaceae ("Bongardia, Caulophyllum, Gymnospermium, Leontice"), Nandinaceae ("Nandina"), and Podophyllaceae ("Achlys, Diphylleia, Dysosma, Jeffersonia, Podophyllum, Ranzania, Sinopodophyllum").
"Mahonia" is very closely related to "Berberis", and included in it by many botanists. However, recent DNA-based phylogenetic research has reinstated "Mahonia", though with a handful of species transferred into the newly described genera "Alloberberis" (formerly "Mahonia" section "Horridae") and "Moranothamnus" (formerly "Mahonia claireae"). Species of "Mahonia" and "Berberis" can be hybridised, with the hybrids being classified in the genus "× Mahoberberis".
"Diphyllaea" is closely related to or perhaps embedded within "Podophyllum." Instead of the current trend to subdivide "Podophyllum" into three genera ("Podophyllum", plus "Dysosma" and "Sinopodophyllum"), inclusion of "Diphyllaea" in a larger "Podophyllum" is equally warranted.