| Description as for the family. Derivation of name: from the Greek: erion meaning wool, spermum a seed, referring to the hairy seeds. Botswana: 10 taxa. |  | 
| Species | FZ divisions | Content | 
| abyssinicum Baker | SW,SE | Description, Image | 
| bakerianum Schinz subsp. bakerianum | N,SW,SE | Description, Image | 
| corymbosum Baker | ||
| mackenii (Hook. f.) Baker subsp. galpinii (Schinz) P.L. Perry | N,SW | |
| porphyrium Archibald | ||
| porphyrovalve Baker | N,SE | |
| rautaneii Schinz | N,SW | |
| roseum Schinz | SW? | |
| seineri Engl. & K. Krause [End] [DD] | ||
| triphyllum Baker [DD] |