Resumen de Haydenoxylon, a Replacement Name for Haydenia (Celastraceae)

Mark P. Simmons, Fred. R. Barrie

• Haydenia M. P. Simmons (Celastraceae) is an illegitimate name because it is a later homonym of Haydenia Seward (Cyatheaceae). The genus is renamed Haydenoxylon M. P. Simmons and the three included species are renamed Haydenoxylon gentryi (Lundell) M. P. Simmons, H. haberianum (Hammel) M. P. Simmons, and H. urbanianum (Loes.) M. P. Simmons. The name H. urbanianum is lectotypified.