Gentianales are an order of flowering plants, included within the asterid group of dicotyledons.
The circumscription of Gentiales in the Cronquist system included a broadly defined Loganiaceae (since broken up into several families), Retziaceae, Gentianaceae, Saccifoliaceae, Apocynaceae, and Asclepiadaceae. The circumscription recognized by the Angiosperm Phylogeny Group (APG) includes Apocynaceae (including Asclepiadaceae), Gelsemiaceae (segregated from Loganiaceae), Gentianaceae (including Saccifoliaceae), Loganiaceae, and Rubiaceae.
Under the APG definition some well-known members of Gentianales are coffee, gardenias, and frangipani.
APG includes Retziaceae in Stilbaceae (order Lamiales).
* Struwe, L., V. A. Albert, and B. Bremer. 1994. Cladistics and family level classification of the Gentianales. Cladistics 10: 175–205.
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