Allium columbianum, the Columbian onion, is a species of onion native to eastern Washington (Pend Oreille, Spokane, Lincoln and Whitman Counties), northern Idaho (Idaho, Clearwater, Latah and Kootenai Counties), and the Bitterroot Mountains of western Montana (Ravalli and Sanders Counties). It grows on shallow, wet soils at elevations of 300–1100 m.
Family common name | Lily family |
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Mt status | Species of Concern |
Origin | native |