Clusia: A plant genus of the family CLUSIACEAE. Members contain benzophenones.Opuntia: A plant genus of the family CACTACEAE. Species with cylindrical joints are called Cholla; flat jointed ones are Prickly-pear.Kalanchoe: A plant genus of the family CRASSULACEAE. Members contain bryophyllins (also called bryotoxins) which are bufadienolides (BUFANOLIDES) that have insecticidal activity.Clusiaceae: The mangosteen plant family (sometimes classified as Guttiferae; also known as Hypericaceae) of the order THEALES, subclass Dilleniidae, class Magnoliopsida. It includes trees and shrubs with resinous, sticky sap, usually with broad-ended, oblong, leathery leaves with a strong, central vein, flowers with many stamens.