Zan Periculi (or "Pericule[s]") was a species of flowering plant native to Lappa IV, a Ferengi planet. It produced bunches of yellow blossoms which are less than fragrant.

DaiMon Tog presented a bouquet of pericules to Lwaxana Troi while attempting to court her in 2366. Lwaxana tossed them in a nearby lake. Following Tog's abduction of Lwaxana and Deanna Troi and William T. Riker, Data discovered the bouquet and was able to deduce the origin of the kidnapper by the flowers' provenance on a Ferengi world. (TNG: "Ménage à Troi")