Complete set of all four volumes.
- Volume 1 covers 72 families with a total of 1092 species, 136 of which have never been described before. There are keys to all genera and species.
- Volume 2 covers 32 families with a total of 416 species, of which 42 have been described as new within the project.
- Volume 3 – the final part to be published – completes the angiosperms, and includes an index to all of the genera described in the four volumes.
- Volume 4, the second volume to be published in this series, covers vascular plants of Somalia. 585 species are treated, including the grasses, sedges, palms, aloes, lilies, etc. 50 of these have been described as new during the project. A number of species additional to Volume One are included in an appendix.