| Name | Polygonum sibiricum var. thomsonii Meisner ex Steward |
| Authorship | Meisner ex Steward |
| Rank | Variety |
| Placed in | Polygonum sibiricum Laxmann |
| Citation | 1930 Contr. Gray Herb. 88: 112 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Polygonum sibiricum var. thomsonii Meisner ex Steward |
| Identification made in | 1930 (1), 2011 (1) |
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