The peony is named after Paeon (also spelled Paean), a student of Asclepius, the Greek god of medicine and healing. Asclepius became jealous of his pupil; Zeus saved Paeon from the wrath of Asclepius by turning him into the peony flower.[3]
The family name "Paeoniaceae" was first used by Friedrich K.L. Rudolphi in 1830, following a suggestion by Friedrich Gottlieb Bartling that same year.[1] The family had been given other names a few years earlier.[4] The composition of the family has varied, but it has always consisted of Paeonia and one or more genera that are now placed in Ranunculales.[2] It has been widely believed that Paeonia is closest to Glaucidium, and this idea has been followed in some recent works.[1][5] Molecular phylogenetic studies, however, have demonstrated conclusively that Glaucidium belongs in Ranunculaceae,[6] but that Paeonia belongs in the unrelated order Saxifragales.[7]
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