Blooms: April - July
Habit: herb
Duration: biennial
Origin: Native
Distribution: Central Washington, chiefly near the Columbia River, south to Nevada and east to Idaho.
Habitat: Rock cliffs and dry, rocky areas.
Habit: herb
Duration: biennial
Origin: Native
Distribution: Central Washington, chiefly near the Columbia River, south to Nevada and east to Idaho.
Habitat: Rock cliffs and dry, rocky areas.
Species Description:
General: Glabrous and glaucous biennial, the stem often hollow, usually freely-branched, 3-25 dm. tall.
Leaves: 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.
Flowers: Inflorescence of bractless, elongate racemes; pedicles stout, 2-5 mm. long, erect-ascending; sepals 4, erect, 3.5-7 mm. long, white, not 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.
Fruits: Siliques erect, straight to strongly curved, 3-6 cm. long and about 1 mm. thick, on a stipe 1-4 mm. long; seeds in 1 series.
General: Glabrous and glaucous biennial, the stem often hollow, usually freely-branched, 3-25 dm. tall.
Leaves: 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.
Flowers: Inflorescence of bractless, elongate racemes; pedicles stout, 2-5 mm. long, erect-ascending; sepals 4, erect, 3.5-7 mm. long, white, not 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.
Fruits: Siliques erect, straight to strongly curved, 3-6 cm. long and about 1 mm. thick, on a stipe 1-4 mm. long; seeds in 1 series.
Accepted Name:
Thelypodium milleflorum A. NelsonSynonyms:
Thelypodium laciniatum (Hook.) Endl. var. milleflorum (A. Nelson) Payson
Treated in Flora of the PNW as:
Thelypodium laciniatum var. milleflorum
Additional Resources:
PNW Herbaria Specimens: View list of Thelypodium milleflorum specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of Thelypodium milleflorum specimens in the WTU Herbarium database.
Washington Flora Checklist: Thelypodium milleflorum treatment.
E-Flora BC: Thelypodium milleflorum atlas page.
CalPhotos: Thelypodium milleflorum images.
USDA Plants Database: Thelypodium milleflorum.
Richard Old
Richard Old
H. Tim Gladwin, 1992
H. Tim Gladwin, 1992
H. Tim Gladwin, 1995
G. D. Carr, 2011
G. D. Carr, 2011
G. D. Carr, 2011
G. D. Carr, 2011
G. D. Carr, 2011
G. D. Carr, 2011
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