| Isolona brunelii De Wild. |
Synonym |
 |
TRO |
| Isolona campanulata Engl. & Diels |
Accepted |
 |
WCSP (in review) |
| Isolona capuronii Cavaco & Keraudren |
Unresolved |
 |
WCSP (in review) |
| Isolona cauliflora Verdc. |
Unresolved |
 |
WCSP (in review) |
| Isolona congolana (De Wild. & T. Durand) Engl. & Diels |
Accepted |
 |
TRO |
| Isolona cooperi Hutch. & Dalziel ex G.P.Cooper & Record |
Accepted |
 |
WCSP (in review) |
| Isolona deightonii Keay |
Accepted |
 |
WCSP (in review) |
| Isolona dewevrei (De Wild. & T.Durand) Engl. & Diels |
Accepted |
 |
WCSP (in review) |
| Isolona ghesquierei Cavaco & Keraudren |
Unresolved |
 |
WCSP (in review) |
| Isolona heinsenii Engl. |
Unresolved |
 |
WCSP (in review) |
| Isolona heinsenii Engl. & Diels |
Unresolved |
 |
WCSP (in review) |
| Isolona hexaloba (Pierre) Engl. & Diels |
Accepted |
 |
WCSP (in review) |
| Isolona humbertiana Ghesq. ex Cavaco & Keraudr. |
Unresolved |
 |
WCSP (in review) |
| Isolona le-testui Pellegr. |
Unresolved |
 |
WCSP (in review) |
| Isolona lebrunii Boutique |
Accepted |
 |
WCSP (in review) |
| Isolona leonensis Sprague & Hutch. |
Synonym |
 |
TRO |
| Isolona leucantha Diels |
Synonym |
 |
TRO |
| Isolona linearis Couvreur |
Unresolved |
 |
WCSP (in review) |
| Isolona madagascariensis (Baill.) Engl. |
Accepted |
 |
TRO |
| Isolona maitlandii Keay |
Unresolved |
 |
WCSP (in review) |
| Isolona perrierii Diels |
Unresolved |
 |
WCSP (in review) |
| Isolona pilosa Diels |
Accepted |
 |
WCSP (in review) |
| Isolona pleurocarpa Diels |
Synonym |
 |
TRO |
| Isolona pleurocarpa subsp. nigerica Keay |
Synonym |
 |
TRO |
| Isolona sereti De Wild. |
Synonym |
 |
TRO |
| Isolona solheidii De Wild. |
Synonym |
 |
TRO |
| Isolona soubreana A.Chev. ex Hutch. |
Accepted |
 |
WCSP (in review) |
| Isolona soubreana A. Chev. |
Synonym |
 |
TRO |
| Isolona theobromina Exell |
Synonym |
 |
WCSP (in review) |
| Isolona thonneri (De Wild & Th. Dur.) Engl. & Diels |
Accepted |
 |
TRO |
| Isolona zenkeri (Engl.) Dyer |
Accepted |
 |
WCSP (in review) |
| Isolona zenkeri Engl. |
Unresolved |
 |
TRO |