Distribution: Occurring west of the Cascades crest in northwestern Washington, where possibly not fully naturalized; northwestern Washington and southwestern Oregon; native to the southern U.S. and Central America.
Habitat: Roadsides and wastelots.
Flowers: May-July
Origin: Introduced from the southern U.S. and Central America
Growth Duration: Annual
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Lepidium oblongum in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Lepidium oblongum checklist entry.
OregonFlora: Lepidium oblongum information.
E-Flora BC: Lepidium oblongum atlas page.
CalPhotos: Lepidium oblongum photos.
USDA Plants: Lepidium oblongum information.