Mentha ×piperita L. ssp. piperita
[= Mentha ×piperita var. piperita]
Annotated by Chambers, H., 2003.

Oregon: Douglas: Myrtle Island Research Natural Area, 11.3-ha island in the Umpqua River, at end of Cougar Creek Road, 7.3 km west of Bullock Bridge and OR 138.
43.475° N, 123.5431° W,
Coordinate Source: OrlookId: 9295, StateProvince: Oregon, County: Douglas, LocName: Myrtle Island Research Natural Area. OregonFlora 1994-2020 methodology.
Alnus-Fraxinus/Rubus/Artemisia community in Pilchuck Soils. Alnus, Fraxinus, Rubus, Artemisia Https://oregonflora.org/collections/individual/index.php?occid=4485558. Phenology: flowering.

Ralph L. Thompson; Ralph L. Thompson 5547, Sep 25, 1977
With Patricia Thompson
OSC, Catalog: OSC-V-032875, Accession Number: OSC185487