Aphanes arvensis L.
Annotated by Peter Frost-Olsen, 26 Nov 2010. Remarks: Revision of North American Aphanes. Herbarium AAU - Inst. Biol. Sci - University of Aarhus - Denmark.

Oregon: Benton County: At the Oregon State University Hyslop Crop Science Field Laboratory, 3455 North East Granger, Corvallis. Elev. 66 m.
T11S R4W S44
Datum: WGS 84. Uncertainty: 500 meters. Coordinate Source: Digital Map.
In and adjacent to plots of Limnanthes. Associated genera Lupinus, Cerastium, Poa annua, Veronica species, Juncus bufonius, Montia linearis, Calindrinia. Common weed. The bowl shaped container formed by the connate stipules with flowers not raised above it are marked with arrows (S). Mature flowers with the ribbed "neck" are marked with arrows (F). Reference specimen for illustration in Revision of Flora of the Pacific Northwest, WTU Herbarium, 2016. Phenology: Fertile.

Richard R. Halse 3854, May 19, 1989
WTU, Accession: 321640, Barcode: WTU-V-022042