Cistus ladanifer, also known as labdanum, is a resinous shrub used in perfumery and herbal medicine. There are several synonyms for Cistus ladanum including Gum Cistus, Rock Rose, and Ladanum Resin. Gum Cistus refers to the sticky substance that exudes from the leaves and twigs of the plant, while Rock Rose describes the petals of the flower, which resemble those of a rose. Ladanum Resin is also a common synonym used to describe the fragrant, amber-colored resin produced by the plant. These synonyms are often used interchangeably in the industry and help to identify this valuable plant and its products.