Carduus tenuiflorus Curtis
Annotated by R.E. Brainerd, 30 Apr 1998.

Oregon: Marion: Along interstate 5, 0.6miles south of Talbot Road overpass. growing in median strip on the west side of I-5 between the freeway and Frontage Road. Elev. 200 ft.
44.748647° N, 123.055886° W,
Datum: not specified. Coordinate Source: OrlookId: 44113, StateProvince: Oregon, County: Marion, LocName: 09S 03W 33 NE. OregonFlora 1994-2020 methodology.
In median strip. HerbariumSpecimenDuplicate: Carduus tenuiflorus Forming a dense, 10x20 foot patch of several hundred stems in the median strip; 15 to 20 scattered stems on the west highway shoulder; flowers white to pale pink, sap clear. Https://oregonflora.org/collections/individual/index.php?occid=4496353. Phenology: fruiting.

Richard E. Brainerd 68, 30 April 1998
With R.E. Brainerd
OSC, Catalog: OSC-V-257195