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Columbian Onion

Allium columbianum (species)

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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.Allium columbianum produces egg-shaped bulbs up to 15 mm long. Flowers are up to 10 mm across, pink to light purple with green midrib; anthers and pollen blue to gray.

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Range Maps show field notes recorded by Natural Atlas contributors and other datasets via GBIF.org

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