| Name | Ariocarpus trigonus (F. A. C. Weber) K. Schumann |
| Authorship | (F. A. C. Weber) K. Schumann |
| Rank | Species |
| Placed in | Ariocarpus Scheidweiler |
| Citation | 1898 Gesamtbeschr. Kakt. 606 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Ariocarpus trigonus (F. A. C. Weber) K. Schumann |
| Identification made in | [no date] (3) |
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