Page authors: Don Knoke, David Giblin
Allium robinsonii
Robinson's onion

Distribution: Near the Columbia River in Washington; Washington south to north-central Oregon.

Habitat: Sand and gravel near the river to rocky, even lithosol benches.

Flowers: April-May

Origin: Native

Conservation Status: Not of concern


Scapose perennial from ovoid bulbs, solitary or clustered, outer coats grayish or brownish, without a network pattern.


Leaves 2, flat, recurved, much longer than the scape, and with it breaking off at the ground at maturity; scape flattened and 2-edged; bracts 2, ovate, purple.


Umbel few- to many-flowered, the pedicels shorter than the tepals; tepals 7-12 mm. long, oblong to lanceolate, white to pale pink with pink mid-nerves; stamens 6, about 1/3 the length of the tepals; anthers reddish; stigma capitate, entire.


Capsule 3-celled, crested with 3 low processes.

Accepted Name:
Allium robinsonii L.F. Hend.
Publication: Rhodora. 32: 22. 1930.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Allium robinsonii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Allium robinsonii checklist entry.

E-Flora BC: Allium robinsonii atlas page.

CalPhotos: Allium robinsonii photos.

USDA Plants: Allium robinsonii information.

39 photographs:
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