Angostura bark is a tropical plant commonly used in cocktails as a bittering agent. This bark has several synonyms, including the term "Cusparia" which is derived from the tree's scientific name, Galipea Cusparia. Another synonym for Angostura bark is "Cusparin" which is a combination of "Cusparia" and "-in", a suffix used to indicate that the substance or ingredient is an alkaloid. This bark is also known as "Bonplandia" or "Bonpland Bark". The name "Bonpland" is in honor of the French botanist Aime Bonpland who discovered this plant in the early 19th century. Regardless of its name, Angostura bark is a potent and aromatic ingredient that brings unique flavors to cocktails and other beverages.