The Madder plant family of the order Gentianales (formerly Rubiales), subclass Asteridae, class Magnoliopsida includes important medicinal plants that provide QUININE; IPECAC; and COFFEE. They have opposite leaves and interpetiolar stipules.
Korsmåror — Isertia — Nauclea — Randia — Pentanisia
Nauclea — Naucleas — Palicourea — Palicoureas — Pentanisia — Pentanisias — Cruciata — Cruciatas — Bouvardia — Bouvardias — Randia — Randias — Saprosma — Saprosmas — Schumanniophyton — Schumanniophytons — Chiococca — Chiococcas — Isertia — Isertias — Pentas