| Name | Thouinia rigidissima Radlkofer & Ekman |
| Authorship | Radlkofer & Ekman |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Thouinia Poiteau |
| Citation | 1927 Ark. Bot. 21A(5): 10 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Thouinia rigidissima Radlkofer & Ekman |
| Identification made in | [no date] (3) |