Page author: David Giblin
Orthocarpus tenuifolius
narrow-leaved owl-clover, thin-leaved owl-clover

Distribution: East of the Cascade crest in Washington; southern British Columbia to central Oregon east to western Montana.

Habitat: Open, moist or rather dry places, from the valleys and plains to moderate elevtions in the mountains.

Flowers: May-August

Origin: Native

Growth Duration: Annual

Conservation Status: Not of concern


Slender annual, the stem 1-3 dm. tall, simple or branched above; herbage puberulent.


Leaves alternate, all cauline, 1-5 cm. long, the lower narrowly linear and entire, the others with 1 or 2 pairs of slender lobes; bracts abruptly differentiated from the leaves, much broader and blunter, entire, or the lower with a pair of slender lateral lobes; the upper bracts have conspicuous, purplish-pink tips.


Inflorescence a dense, showy spike; calyx 2-cleft, with bifid segments; corolla yellow, purplish at the tip, 14-20 mm. long, bilabiate, the lower lip inflated, with 3 short teeth; upper lip hooded, enclosing the 4 stamens, about 1 mm. longer than the lower lip, hooked at the tip.



Accepted Name:
Orthocarpus tenuifolius (Pursh) Benth.
Publication: Scroph. Ind. 12. 1835.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Orthocarpus tenuifolius in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Orthocarpus tenuifolius checklist entry.

E-Flora BC: Orthocarpus tenuifolius atlas page.

CalPhotos: Orthocarpus tenuifolius photos.

USDA Plants: Orthocarpus tenuifolius information.

30 photographs:
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