| Name | Gomphocarpus tometosus var. xantii A. Gray |
| Authorship | A. Gray |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Gomphocarpus tometosus (Torrey) A. Gray |
| Citation | 1878 Syn. Fl. N. Amer. 2(1): 100 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Gomphocarpus tometosus var. xantii A. Gray |
| Identification made in | [no date] (2) |