| Name | Polygonum caespitosum var. longisetum (Bruijn) Danser |
| Authorship | (Bruijn) Danser |
| Rank | Variety |
| Placed in | Polygonum caespitosum Blume |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Polygonum caespitosum var. longisetum (Bruijn) Danser |
| Identification made in | [no date] (1) |
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