Spirodela punctata (G. Mey.) C.H. Thomps.
[= Spirodela oligorrhiza]
Annotated by Armstrong, W., 1993.

Oregon: Douglas: Ca. 8 km. east of Roseburg, ca. 2 km NE of Dixonville, along eastern shore of large log pond, ca. 60 m south of transmission line.
43.216667° N, 123.216667° W,
Coordinate Source: OrlookId: 87155, StateProvince: Oregon, County: Douglas, LocName: Lat 43 Deg 13 Min; Lon -123 Deg 13 Min. OregonFlora 1994-2020 methodology.
Large log pond; floating aquatic. Wolffia brasiliensis, Wolffia columbiana Https://oregonflora.org/collections/individual/index.php?occid=1060395. Phenology: flowering? and fruiting?.

Scott Sundberg; Scott Sundberg 4587, May 17, 1993
With Margaret Clancy
OSC, Catalog: OSC-V-064011, Accession Number: OSC181052