Poa gracillima Vasey var. multnomae (Piper) Hitchc.
[= Poa ×multnomae]
Annotated by C.L.H., 1964.

Oregon: Multnomah County: Multnomah Falls.
45.57608° N, 122.115715° W,
Datum: WGS 84. Uncertainty: 508 meters. Coordinate Source: Digital Map.
[The date typed on the label: Jun 20, 1904 - is incorrect for that collection number]. Phenology: Flowers & Fruits. Isotype: Poa multnomae Piper. Published 1905. Bulletin Torrey Botanical Club 32(8): 435.
Isotype: Poa gracillima Vasey var. multnomae (Piper) Hitchc.. Published 1969. Vascular Plants of the Pacific Northwest 1: 661.

C. V. Piper 6459, Jun 25, 1904
WTU, Accession: 12037JWT, Barcode: WTU-V-000050