Page authors: Don Knoke, David Giblin
Collinsia rattanii
Rattan collinsia

Distribution: Occurring east of the Cascades crest in Washington along the Columbia River Gorge; south-central Washington to the John Day valley in Oregon.

Habitat: Open woods at low elevations.

Flowers: April-June

Origin: Native

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Bumblebees, bees, flies, beetles, wasps


Annual, the stem erect and often simple, up to 4 dm. tall, with spreading, gland-tipped hairs on the upper part.


Leaves opposite, glabrous, linear, entire, sessile.


Flowers 1-few in the leaf axils, on long pedicles; calyx lobes 5, about equaling the tube; corolla tube nearly straight, gibbous on the upper side near the base; corolla bilabiate, blue with a white upper lip, 4-7 mm. long; stamens 4.


Capsule ellipsoid.

Accepted Name:
Collinsia rattanii A. Gray
Publication: Proc. Amer. Acad. Arts 15(1): 50. 1880.

Synonyms & Misapplications:
Collinsia rattanii A. Gray ssp. glandulosa (Howell) Pennell [HC]
Collinsia rattanii A. Gray ssp. rattanii
Additional Resources:

PNW Herbaria: Specimen records of Collinsia rattanii in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Collinsia rattanii checklist entry

OregonFlora: Collinsia rattanii information

E-Flora BC: Collinsia rattanii atlas page

CalPhotos: Collinsia rattanii photos

27 photographs:
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