| Leucaena involucrata Zárate, 1995 |
| Leucaena lanceolata S. Watson, 1886 |
| Leucaena lanceolata var. lanceolata S. Watson, 1886 |
| Leucaena lanceolata var. sousae (Zárate) C.E. Hughes, 1997 |
| Leucaena leucocephala (Lam.) de Wit, 1961 |
| Leucaena leucocephala subsp. glabrata (Rose) Zárate, 1987 |
| Leucaena leucocephala subsp. leucocephala (Lam.) de Wit, 1961 |
| Leucaena macrocarpa Rose, 1895 |
| Leucaena macrophylla Benth., 1844 |
| Leucaena macrophylla subsp. istmensis C.E. Hughes, 1997 |
| 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 |