The Piperaceae, also known as the pepper family, are a large family of flowering plants. The group contains roughly 3,600 currently accepted species in 13 genera. The vast majority of peppers can be found within the two main genera: Piper (2000 species) and Peperomia (1600 species). Members of the Piperaceae may be small trees, shrubs, or herbs. The distribution of this group is best described as pantropical. The best-known species, Piper nigrum, yields most peppercorns that are used as spices, including black pepper, although its relatives in the family include many other spices.