Catuaba (Trichilia catigua) is a hardwood tree, & member of the mahogany family, that is native to the Amazon Rainforest. The bark of the Catuaba tree has a long history of documented use, & it is still popularly used by Brazilian couples today. It is thought that Catuaba was first discovered by the Tupi Indians – who call it ' The Tree of Love’ or the ‘ Tree of Togetherness’ – & have composed many songs in praise it. In Brazil it has been used for generations & is still one of South America’s most famous herbs. The chemical constituents found in Catuaba include alkaloids, tannins, phytosterols, lignans, sequiterpines, & flavonoids. A Brazilian researcher documented (in 1958) that Catuaba contained the alkaloid yohimbine, but it is unclear exactly which species he was researching.