| Name | Koidzumi, Gen'ichi (Geniti, Gen-Iti) |
| Date of birth | 1883 |
| Date of death | 1953 |
| Remarks | [author note: Herbarium and types: KYO; additional material at E, TI] |
| ASA Botanist ID | 101687 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/49854c10-17ab-4c40-9465-813255d6debf |
| Variant name | Genichi (Geniti, Gen-Iti) Koidzumi |
| Author name | Koidzumi |
| B & P Author Abbrev. | Koidz. |
| Standard/Label Name | G. Koidzumi |
| Full Name | Koidzumi, Gen'ichi (Geniti, Gen-Iti) |
| Geography Author | Japan |
| Specialty Author | Algae |
| Specialty Author | Pteridophytes |
| Specialty Author | Spermatophytes |
| Citation as Author | Authors of Plant Names. Royal Botanic Gardens, Kew |
| Citation as Author | Taxonomic Literature. Second Edition. Utrecht |
| Member of teams/groups | |
| Author in | Fl. Symb. Orient.-Asiat. |
| Author in | Trees Shrubs Japan, Revis. Ed. |
| Author in | Pl. Nov. Amami-Ohsim. |
| Collector Teams: | Matsumura & Koidzumi |
| Author Teams: | Matsumura & Koidzumi |