| Name | Echinocactus polycephalus Engelmann & J. M. Bigelow |
| Authorship | Engelmann & J. M. Bigelow |
| Rank | Species |
| Placed in | Echinocactus |
| GUID | urn:lsid:ipni.org:names:314488-2 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Echinocactus polycephalus Engelmann & J. M. Bigelow |
| Identification made in | [no date] (10) |
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