Cinchona lancifolia is a plant species that belongs to the family Rubiaceae. It is native to South America, where it is commonly known as quina or quinine. This plant has been used for centuries for its medicinal properties, particularly in the treatment of malaria. However, there are also some synonyms for cinchona lancifolia that have been used in scientific literature. These include Cinchona cordifolia, Cinchona cordata, and Cinchona ovata. Despite the different names, these synonyms refer to the same plant species and are all commonly used in pharmacological and botanical research.