Author: Jan Scholten
Botany: ± 800 species; mostly herbs.
Use: ornamental; aromatic oil, perfume.
1. Vivianiaceae: Balbisia, Cissarobryon, Rhynchotheca, Viviania, Wendtia.
2. Monsonioideae: Monsonia.
3. Geranioideae2: Geranium.
4. Geranioideae: Geranium.
5. Pelargonioideae: Pelargonium.
6. Erodioideae: Erodium.
7. Melianthaceae, including Greyiaceae, Francoaceae: Bersama, Francoa, Greyia, Melianthus, Tetilla.
In the Cronquist system Geraniaceae was placed in Oxalidales together with Oxalidaceae, Limnanthaceae, Tropaeolaceae and Balsaminaceae. In the Apg2 classification Geraniales was placed in Rosidae, outside Eurosidae 1 and 2. In the Apg3 classification Geraniales has been connected with the Myrtales and seen as sister to Malvidae, or combined with the Malvidae in an extended Malvidae.
The demarcation of the families is still in dispute. Geraniaceae is the main family, the other families are very small.
In the Plant theory Geraniales are the third Subclass of Malvanae, with the emphasis on the Silicon series: 3-653.00.00.
In the updated version of the Plant theory the main family Geraniaceae is split into 5 Subfamilies: Monsonioideae, Geranioideae, Geranioideae, Pelargonoideae and Erodioideae. They are placed in the subphase 2 to 5. Vivianiaceae is including Ledocarpaceae. It is Shifted from Subphase 7 to Subphase 1. Melianthaceae includes Francoaceae and Greyiaceae. It is shifted form Subphase 6 to 7.