| Name | Opuntia megarhiza Rose |
| Authorship | Rose |
| Rank | Species |
| Placed in | Opuntia |
| Citation | 1906 Contr. U.S. Natl. Herb. 10: 126 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Opuntia megarhiza Rose |
| Identification made in | [no date] (1) |
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