Page authors: Don Knoke, David Giblin
Hypericum scouleri
Norton's St. John's wort, Scouler's St. John's wort, western St. John's wort

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.

Habitat: Moist places from along the coast to well up in the mountains.

Flowers: June-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bumblebees, bees, flies, wasps


Perennial from wide-spread rhizomes and stolons, the stems erect, usually many, 1-8 dm. tall, simple to freely-branched.


Leaves opposite, sessile, oblong-elliptic to ovate-lanceolate, 1-3 cm. long, purplish-black dotted, the bases somewhat clasping.


Inflorescence of few-flowered, leafy-bracteate cymes; sepals 5, triangular to ovate-lanceolate, purplish-black dotted, rounded; petals 5, pale to bright yellow, about twice the length of the sepals, conspicuously purplish-black dotted along the margins; stamens 75-100, attached at the base into 3 distinct groups; styles 3, slender, 3-5 mm. long.


Capsule 6-9 mm. long, 3-celled.

Accepted Name:
Hypericum scouleri Hook.
Publication: Fl. Bor.-Amer. (Hooker) 1(3): 111. 1831.

Synonyms & Misapplications:
Hypericum formosum Kunth var. nortoniae (M.E. Jones) C.L. Hitchc. [VPPNW, HC]
Hypericum formosum Kunth var. scouleri (Hook.) J.M. Coult. [VPPNW, HC]
Hypericum scouleri Hook. ssp. nortoniae (M.E. Jones) J.M. Gillett [IFBC]
Hypericum scouleri Hook. ssp. scouleri [IFBC]
Additional Resources:

PNW Herbaria: Specimen records of Hypericum scouleri in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Hypericum scouleri checklist entry.

OregonFlora: Hypericum scouleri information.

E-Flora BC: Hypericum scouleri atlas page.

CalPhotos: Hypericum scouleri photos.

USDA Plants: Hypericum scouleri information.

33 photographs:
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