plural noun
Gen·​tia·​na·​les | \ -ā(ˌ)lēz\

Definition of Gentianales 

: an order of dicotyledonous plants having gamopetalous and usually actinomorphic flowers with two carpels and mostly opposite leaves — compare apocynaceae, asclepiadaceae, gentianaceae, loganiaceae, oleaceae , salvadoraceae

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History and Etymology for Gentianales

New Latin, from Gentiana + -ales

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