| Name | Polygonum douglasii subsp. majus (Meisner) J. C. Hickman |
| Authorship | (Meisner) J. C. Hickman |
| Rank | Subspecies |
| Placed in | Polygonum douglasii Greene |
| Citation | 1984 Madroño 31(4): 250 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Polygonum douglasii subsp. majus (Meisner) J. C. Hickman |
| Identification made in | [no date] (5) |
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