Page author: David Giblin
Erythranthe primuloides
primrose monkey-flower

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Utah, Arizona, and New Mexico.

Habitat: Wet meadows and boggy areas at middle to high elevations in the mountains.

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Mat-forming perennial from long, thin rhizomes, the stem lax, up to 6 cm. long.


Leaves opposite, crowded near the ground, short-hairy abaxially (underside), viscid to glabrous adaxially (upperside); leaves oblanceolate, sessile, nearly entire, 3-nerved from the base, 7-25 mm. long and 3-11 mm. wide.


Flowers solitary on slender pedicels up to 10 cm. long arising from the leaf clusters; calyx narrow, 4-8 mm. long, mostly glabrous, the 5 teeth short, equal; corolla yellow, often dotted with maroon, 1-2 cm. long, scarcely bilabiate, the 5 lobes spreading, shallowly notched, the throat somewhat flaring; stamens 4.



Accepted Name:
Erythranthe primuloides (Benth.) G.L. Nesom
Publication: Phytoneuron 2012-39: 1–60. 2012.

Synonyms & Misapplications:
Mimulus primuloides Benth. [HC]
Additional Resources:

PNW Herbaria: Specimen records of Erythranthe primuloides in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Erythranthe primuloides checklist entry

OregonFlora: Erythranthe primuloides information

E-Flora BC: Erythranthe primuloides atlas page

CalPhotos: Erythranthe primuloides photos

34 photographs:
Group by