Toxicological Trivia from April 05, 2010: Titan Arum – Largest Inflorescence in the World. These are typical lowland plants, growing in the tropical and subtropical zones of the paleotropics, from West Africa to the Pacific Islands. None of them are found in the Americas although a remarkably similar but not closely related genus, Dracontium, has evolved there. Most species are endemic. They grow preferably on disturbed grounds, such as secondary forests.The plant, which blooms every three years, drew the attention of hundreds of onlookers who came to see her in an exhibition at the National Botanic Garden of Belgium, in August 2008. In addition to size is typical: a) The pleasant odor; b) Its horrible stench; c) The bright color.