| Name | Echinocactus horizonthalonius var. horizonthalonius |
| Authorship | |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Echinocactus horizonthalonius Lemaire |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Echinocactus horizonthalonius var. horizonthalonius |
| Identification made in | 2008 (2) |
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