Aristolochiales
Aristolochiales is an order of flowering plants. It is not recognised in the APG or APG II systems, in which it is considered a synonym of Piperales. It also is not recognized in the Thorne system.
In the Cronquist, Dahlgren, Goldberg and Reveal systems it is composed of a single family, the Aristolochiaceae. In the Hutchinson system the carnivorous Nepenthaceae and the parasitic Cytinaceae and Hydnoraceae are also included. In the Melchior system Hydnoraceae and Rafflesiaceae are included in addition to Aristolochiaceae.
