| Name | Echinocereus pectinatus var. rigidissimus (Engelmann) Rümpler |
| Authorship | (Engelmann) Rümpler |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Echinocereus pectinatus (Scheidweiler) Engelmann |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Echinocereus pectinatus var. rigidissimus (Engelmann) Rümpler |
| Identification made in | [no date] (2) |
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