Euphorbia oblongata Griseb.
Annotated by Halse, R., 1991.

Oregon: Marion: Salem, by the intersection of State and Hawthorne Streets on the grounds of the Oregon State Penitentiary; by the edge of a pond. Elev. 58
44.930959° N, 122.995369° W,
Datum: NAD83. Coordinate Source: OrlookId: 47108, StateProvince: Oregon, County: Marion, LocName: 07S 03W 77. OregonFlora 1994-2020 methodology.
Grounds of the Oregon State Penitentiary; by the edge of a pond with Alnus, Rubus, Mentha, Cirsium, Solanum, Salix. HerbariumSpecimenDuplicate: Euphorbia oblongata | herbariumSpecimenDuplicate: Euphorbia oblongata | herbariumSpecimenDuplicate: Euphorbia oblongata | herbariumSpecimenDuplicate: Euphorbia oblongata | herbariumSpecimenDuplicate: Euphorbia oblongata | herbariumSpecimenDuplicate: Euphorbia oblongata | herbariumSpecimenDuplicate: Euphorbia oblongata | herbariumSpecimenDuplicate: Euphorbia oblongata Https://oregonflora.org/collections/individual/index.php?occid=1058908. Phenology: flowering and fruiting.

Richard R. Halse 4334, Sep 26, 1991
OSC, Accession Number: OSC176007