| Name | Lejeune, Alexandre Louis (Alexander Ludwig) Simon |
| Date of birth | 1779 |
| Date of death | 1858 |
| Remarks | [author note: Herbarium and types: BR; duplicates at G, GRO, H, L, LG, MW] |
| ASA Botanist ID | 101098 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/c7debb85-f417-43b8-8ce4-88d385f7831b |
| Variant name | Alexandre Louis Simon Lejeune |
| Author name | Lejeune |
| B & P Author Abbrev. | Lej. |
| Standard/Label Name | A. L. S. Lejeune |
| Full Name | Lejeune, Alexandre Louis (Alexander Ludwig) Simon |
| Geography Author | Belgium |
| Specialty Author | Pteridophytes |
| Specialty Author | Spermatophytes |
| Citation as Author | Taxonomic Literature. Second Edition. Utrecht |
| Citation as Author | Authors of Plant Names. Royal Botanic Gardens, Kew |
| Author in | Fl. Spa |
| Author in | Comp. Fl. Belg. |
| Author in | Calothec. Sp. |
| Author in | Rev. Fl. Spa |
| Author in | Indig. Pl. Virt. |