Noun | 1. sweet sand verbena - taller than Abronia elliptica and having night-blooming flowersAbronia fragranssand verbena - any of various plants of the genus Abronia of western North America and Mexico having flowers resembling verbena | | 2. sweet sand verbena - plant having heads of fragrant white trumpet-shaped flowers; grows in sandy arid regionsAbronia elliptica, snowballsand verbena - any of various plants of the genus Abronia of western North America and Mexico having flowers resembling verbena |