(1) Solitary axillary flower, berry fruit, bicollateral vascular bundles in stem
(2) Solitary terminal flower, porous dehiscenceof anther, adnation of petiole with the stem
(3) Scorpioid cyme, porous dehiscenceof anther, calyx remain attached to the fruit
(4) Scorpioid cyme, longitudinal dehiscenceof anther, adnation of peduncle with internode
