Page author: David Giblin
Lepidium latifolium
dittander, broad-leaved peppergrass, broad-leaved pepperwort

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Great Plains and eastern North America.

Habitat: Disturbed, moist areas, irrigated land, stream banks, and drier upland areas.

Flowers: June-September

Origin: Introduced from Eurasia

Growth Duration: Perennial

Conservation Status: Not of concern


Glabrous perennial from well-developed rhizomes, the stems up to 2 m. tall.


Leaves alternate, entire to dentate, the basal with blades up to 30 cm. long and 6-8 cm. broad, with petioles sometimes as long; cauline leaves reduced, becoming sub-sessile and entire.


Inflorescence of numerous, bractless, much-compounded racemes; pedicles terete, much longer than the fruits; sepals 4, early-deciduous; petals 4, white, 1.5 mm. long; stamens 6; style almost lacking.


Silicles ovate-rotund, 2 mm. long, strongly obcompressed, with a few soft hairs, not at all notched, tipped by the stigma.

Accepted Name:
Lepidium latifolium L.
Publication: Sp. Pl. 2: 644. 1753.

Synonyms & Misapplications:
Cardaria latifolia (L.) Spach
Additional Resources:

PNW Herbaria: Specimen records of Lepidium latifolium in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Lepidium latifolium checklist entry.

E-Flora BC: Lepidium latifolium atlas page.

CalPhotos: Lepidium latifolium photos.

USDA Plants: Lepidium latifolium information.

28 photographs:
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