Gentianaceae: Gamopetalae

Plants herbs or sub-shrubs, branching dichotomous, leaves opposite, decussate, exstipulate; monochasial or dichasial cyme; flower actinomorphic hermaphrodite, hypogynous; calyx and corolla 4-5, fused, stamens 4-5, epipetalous; bicarpellary, syncarpous, superior, unilocular, parietal placentation, style simple; fruit capsule.