Page author: Don Knoke
Physostegia parviflora
purple dragonhead, western false dragonhead

Distribution: East of the Cascade summits, British Columbia south through Washington to the Columbia Gorge, where west to Portland, Oregon; east to Idaho and North Dakota.

Habitat: Shores of strams and lakes, marshes, and other low, wet places in the valleys and foothills.

Flowers: July - September

Origin: Native

Growth Duration: Perennial

Conservation Status: Review Group 1 in Washington (WANHP)


Perennial herbs from a rhizome, the stems 2-10 dm. tall, simple, or branched at the base of the inflorescence.


Leaves opposite, all cauline, the lower reduced, the others 3-10 cm. long and 5-20 mm. wide, sessile, serrate or nearly entire, linear-oblong, the upper lance-ovate near the inflorescence.


Inflorescence a close-flowered, elongate, terminal raceme, the flowers sub-sessile; calyx 4-6 mm. long, finely glandular-pubescent, the 5 teeth short and uneven; corolla lavender-purple, 12-16 mm. long, bilabiate, the lips 3-5 mm. long, the lower 3-lobed; stamens 4, ascending under the upper corolla-lip.


Nutlets 4.

Accepted Name:
Physostegia parviflora Nutt. ex A. Gray
Publication: Syn. Fl. N. Amer. 2(1): 383. 1878.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Physostegia parviflora in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Physostegia parviflora checklist entry.

E-Flora BC: Physostegia parviflora atlas page.

CalPhotos: Physostegia parviflora photos.

USDA Plants: Physostegia parviflora information.

28 photographs:
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