Page authors: Don Knoke, David Giblin
Thelypodium laciniatum
cut-leaf thelypody, thick-leaved thelypody

Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Idaho and Nevada.

Habitat: Rock cliffs and dry, rocky areas.

Flowers: April-July

Origin: Native

Conservation Status: Not of concern


Glabrous and glaucous biennial, the stem often hollow, usually freely-branched, 3-25 dm. tall.


Leaves rather fleshy, the basal ovate to deltoid-lanceolate, 1-4.5 dm. long, long-petiolate, sharply and deeply lobed; cauline leaves alternate, numerous, reduced upward, pinnatifid to nearly entire.


Inflorescence of bractless, elongate racemes; pedicles stout, 2-5 mm. long, spreading; sepals 4, erect, 3.5-7 mm. long, greenish-white to purplish, sometimes saccate at the base; petal 4, white, 6-20 mm. long, linear to narrowly spatulate; stamens 6, the filaments flattened, distinct, shorter than the sepals; style 1-3 mm. long.


Siliques spreading, straight to strongly curved, 4-14 cm. long and about 1 mm. thick, on a stipe 1-4 mm. long; seeds in 1 series.

Accepted Name:
Thelypodium laciniatum (Hook.) Endl.
Publication: Repert. Bot. Syst. 1: 172. 1842.

Synonyms & Misapplications:
Thelypodium laciniatum (Hook.) Endl. var. laciniatum [HC]
Thelypodium laciniatum (Hook.) Endl. var. streptanthoides (Leiberg ex Piper) Payson [HC]
Additional Resources:

PNW Herbaria: Specimen records of Thelypodium laciniatum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Thelypodium laciniatum checklist entry.

E-Flora BC: Thelypodium laciniatum atlas page.

CalPhotos: Thelypodium laciniatum photos.

USDA Plants: Thelypodium laciniatum information.

56 photographs:
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