Classification
Kingdom: Plantae (2615)
Phylum: Tracheophyta (2518)
Class: Magnoliopsida (2127)
Order: Dilleniales (4)
Family: Paeoniaceae (4)(family description)
Genus: Paeonia (4)
Epithet: officinalis (12)
Subspecies: microcarpa Nyman
microcarpa => bearing small fruit
officinalis => of practical use to man; official species in commerce, especially for medicinal purposes