Most of the eight Passiflora species in Taiwan were previously reported as naturalized, except for the new species Passiflora foetida var. tainaniana (1982: 5) reported by Y.-C. Liu & C.-H. Ou in 1982, and a newly naturalized species, Passiflora ligularis Juss. (1805: 113), recently found in central Taiwan. Passiflora suberosa L. (1753: 958) has been growing in Taiwan for a long period of time, and according to the description and treatment by Porter-Utley (2014), we used the scientific name P. suberosa subsp. litoralis (Kunth 1817: 138) K.Port.-Utl. ex M.A.M.Azevedo, Baumbratz, & Gonc.-Estev (2012: 47). A key to the eight Passiflora species, photographs, and their scientific name revisions are provided below to aid their identification.