| Name | Polygonum lapathifolium var. incanum (F. W. Schmidt) W. D. J. Koch |
| Authorship | (F. W. Schmidt) W. D. J. Koch |
| Rank | Variety |
| Placed in | Polygonum lapathifolium Linnaeus |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Polygonum lapathifolium var. incanum (F. W. Schmidt) W. D. J. Koch |
| Identification made in | [no date] (1), 1894 (1) |