| Isostigma acaule (Baker) Chodat |
Accepted |
 |
TICA |
| Isostigma brasiliense Benth. & Hook.f. |
Unresolved |
 |
TICA |
| Isostigma cordobense Cabrera |
Accepted |
 |
TICA |
| Isostigma crithmifolium Sch.Bip. ex Benth. & Hook.f. |
Unresolved |
 |
TICA |
| Isostigma crithmifolium Less. |
Accepted |
 |
TICA |
| Isostigma crithmifolium var. nanum Sherff |
Synonym |
 |
TICA |
| Isostigma dissitifolium Baker |
Accepted |
 |
TICA |
| Isostigma fiebrigii Hieron. [Illegitimate] |
Unresolved |
 |
TICA |
| Isostigma foliosum Malme |
Unresolved |
 |
TICA |
| Isostigma glycinaefolium Sherff |
Unresolved |
 |
TICA |
| Isostigma herzogii Hassl. |
Accepted |
 |
TICA |
| Isostigma hoffmannii Kuntze |
Accepted |
 |
TICA |
| Isostigma megapotamicum (Spreng.) Sherff |
Synonym |
 |
TICA |
| Isostigma microcephalum Baker |
Accepted |
 |
TICA |
| Isostigma microphyllum Baker |
Unresolved |
 |
TICA |
| Isostigma molfinianum Sherff |
Accepted |
 |
TICA |
| Isostigma peucedanifolium (Spreng.) Less. |
Accepted |
 |
TICA |
| Isostigma peucedanifolium f. discoidea Hassl. |
Synonym |
 |
TICA |
| Isostigma peucedanifolium var. dissitifolium (Baker) Hassl. |
Synonym |
 |
TICA |
| Isostigma peucedanifolium f. radiata Hassl. |
Synonym |
 |
TICA |
| Isostigma riedelii Sch.Bip. ex Baker |
Unresolved |
 |
TICA |
| Isostigma riedelii (Baker) Chodat |
Accepted |
 |
TICA |
| Isostigma scorzoneraefolium Sherff |
Accepted |
 |
TICA |
| Isostigma simplicifolium Less. |
Unresolved |
 |
TICA |
| Isostigma sparsifolium G.Péter |
Unresolved |
 |
TICA |
| Isostigma speciosum Less. |
Accepted |
 |
TICA |
| Isostigma speciosum var. riedelii Baker |
Synonym |
 |
TICA |
| Isostigma stellatum Baker |
Unresolved |
 |
TICA |
| Isostigma vailiana Britton |
Synonym |
 |
TICA |