The Ginkgoales order consists of only one extant species- Ginkgo biloba- which is commonly referred to as the maidenhair tree. However, several synonyms have been used to identify this order for years. Ginkgophyta is one such synonym, which is a small division of plants that includes only the one living species, Ginkgo biloba. Other synonyms are Salisburiales and Ginkgoanae, which are no longer used much today, but they once referred to the Ginkgoales order. The Ginkgoales classification belongs to the kingdom Plantae and division Ginkgophyta. The order is botanically unique because it has no close living relatives.