| Spigelia xochiquetzalliana Islas-Hern., Lozada-Pérez & L.O. Alvarado, 2017 |
| Strychnos L., 1753 |
| Strychnos brachistantha Standl., 1936 |
| Strychnos gubleri G. Planch., 1880 |
| Strychnos hirtiflora (Standl.) Lundell, 1937 |
| Strychnos nigricans Progel, 1868 |
| Strychnos panamensis Seem., 1854 |
| Strychnos panamensis var. hirtiflora Standl., 1932 |
| Strychnos panamensis var. panamensis Seem., 1854 |
| Strychnos panurensis Sprague & Sandwith, 1927 |
| Strychnos peckii B.L. Rob., 1913 |
| Strychnos tabascana Sprague & Sandwith, 1927 |
| Strychnos tepicensis Standl., 1924 |
| Strychnos trinervis (Vell.) Mart., 1843 |
| Strychnos triplinervia Mart., 1841 |