| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Flora of the Sudan-Uganda Border Area East of the Nile. II. Catlogue of vascular plants, 2nd part, vegetation and phytogeography | 978-87-7304-318-9 (87-7304-318-4) | 2005 | Kaj Vollesen |
| Luigi Balugani's Drawings of African Plants | 978-90-6191-779-3 (90-6191-779-4) | 1991 | Paul Hulton · F. Nigel Hpper |