| Name | Hamann, Ole Jorgen |
| Date of birth | 1944 |
| Remarks | [author note: Flora of Galapagos Islands, Ecuador, and South America; conservation] [collector note: Galapagos Islands; C, GH] |
| ASA Botanist ID | 113385 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/59f17bff-0bc9-4da2-8382-4088fbdb92f7 |
| Variant name | Ole Jorgen Hamann |
| Author name | O. J. Hamann |
| B & P Author Abbrev. | O. J. Hamann |
| Standard/Label Name | O. J. Hamann |
| Full Name | Hamann, Ole Jorgen |
| Geography Author | Denmark |
| Geography Collector | Denmark, Ecuador |
| Specialty Author | Pteridophytes |
| Specialty Author | Spermatophytes |
| Specialty Collector | Phanerogams |
| Citation as Author | Authors of Plant Names. Royal Botanic Gardens, Kew |
| Citation as Author | Index Herbariorum. Part 1: The Herbaria of the World. Eighth Edition. Bronx, NY |
| Citation as Collector | Index Herbariorum, ed. 8 |
| Member of teams/groups | |
| Collector Teams: | O. J. Hamann & O. Seberg O. J. Hamann & S. Wium-Andersen |