Page authors: David Giblin, Don Knoke
Eremothera minor
small-flowered evening primrose, green river suncup

Distribution: East of the Cascades in Washington; Washington south to California, east to Montana and Colorado.

Habitat: Sagebrush desert, often where vernally moist

Flowers: April-June

Origin: Native

Growth Duration: Annual

Conservation Status: Sensitive in Washington (WANHP)


Pubescent, glandular annual, the main stem branched at the base but simple above, 5-25 cm. tall.


Basal leaves long-petiolate, the blades oblong-lanceolate to oblanceolate, 1-3 cm. long and 4-15 mm. broad, greatly reduced upward to linear, sessile bracts in the upper part of the spikes.


Flowers in loose, bracteate spikes, the branches with flowers nearly to the base; calyx tube 0.5-2 mm. long, the 4 lobes distinct and reflexed, 1-2 mm. long; petals obovate, pale yellow to off-white, aging to pink, 1-2 mm. long; stamens 8, with 4 filaments about equal to the petals, the other 4 much shorter; style slightly longer than the stamens, the stigma globose; ovary inferior, 4-celled.


Capsule linear, 12-25 mm. long, conspicuously contorted, often coiled.

Accepted Name:
Eremothera minor (A. Nelson) W.L. Wagner & Hoch
Publication: Systematic Botany Monographs 83: 210. 2007.

Synonyms & Misapplications:
Camissonia minor (A. Nelson) P.H. Raven [JPM]
Oenothera minor (A. Nelson) Munz [HC]
Oenothera minor (A. Nelson) Munz var. cusickii Munz
Sphaerostigma minor A. Nelson
Additional Resources:

PNW Herbaria: Specimen records of Eremothera minor in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Eremothera minor checklist entry.

E-Flora BC: Eremothera minor atlas page.

CalPhotos: Eremothera minor photos.

USDA Plants: Eremothera minor information.

13 photographs:
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