Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to eastern North America.
Habitat: Shrub-steppe habitat, both degraded and intact; disturbed areas, roadsides, and pastures.
Flowers: March-June
Origin: Introduced from sw Asia
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bees, flies, butterflies, moths
Annual with stalked glands and simple hairs, the stem 1-5 dm. tall, usually with several basal, decumbent branches.
Leaves alternate, elliptic-oblong to lanceolate or oblanceolate, all but the uppermost petiolate, the blade 3-8 cm. long, deeply wavy-toothed.
Inflorescence of elongate racemes, the lower flowers from the axils of slightly reduced leaves, the main part of the raceme bractless; calyx narrowly tubular, 6-8 mm. long, the lateral sepals somewhat saccate at the base; petals 4, pale magenta, the narrow claw slightly exceeding the sepals, the spreading, oblong blades 5 mm. long; stamens 6; style none.
Siliques 3.5-4.5 cm. long, terete, spreading, curved, and ascending, strongly 1-nerved, constricted between the seeds and eventually breaking at the constrictions; upper portion of the silique sterile and forming a sharp beak 7-20 mm. long.
PNW Herbaria: Specimen records of Chorispora tenella in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Chorispora tenella checklist entry
OregonFlora: Chorispora tenella information
E-Flora BC: Chorispora tenella atlas page
CalPhotos: Chorispora tenella photos