| Leucaena macrophylla subsp. macrophylla Benth., 1844 |
| Leucaena macrophylla subsp. nelsonii (Britton & Rose) Zárate, 1995 |
| Leucaena matudae (Zárate) C.E. Hughes, 1997 |
| Leucaena microcarpa Rose, 1897 |
| Leucaena pallida Britton & Rose, 1928 |
| Leucaena pubescens Britton & Rose, 1928 |
| Leucaena pueblana Britton & Rose, 1928 |
| Leucaena pulverulenta (Schltdl.) Benth., 1842 |
| Leucaena purpusii Britton & Rose, 1928 |
| Leucaena retusa Benth., 1852 |
| Leucaena shannonii Donn. Sm., 1914 |
| Leucaena sonorensis Britton & Rose, 1928 |
| Leucaena stenocarpa Urb., 1900 |
| Leucaena trichandra (Zucc.) Urb., 1900 |
| Leucaena x mixtec C.E. Hughes & S.A. Harris, 1998 |
| Leucaena x spontanea C.E. Hughes & S.A. Harris, 1998 |
| Leycephyllum Piper, 1924 |
| Leycephyllum micranthum Piper, 1924 |
| Libidibia (DC.) Schltdl., 1830 |
| Libidibia coriaria (Jacq.) Schltdl., 1830 |