| Name | Amaranthus crassipes var. warnockii (I. M. Johnston) Henrickson |
| Authorship | (I. M. Johnston) Henrickson |
| Rank | Variety |
| Placed in | Amaranthus crassipes Schlechtendal |
| Citation | 1999 Sida 18(3): 788 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Amaranthus crassipes var. warnockii (I. M. Johnston) Henrickson |
| Identification made in | [no date] (2), 1997 (2) |