Lepidium ruderale is an annual or biennial herb to 50 cm tall, unpleasant odor, minutely hairy.
Leaves alternate, basal leaves twice pinnately lobed, lower stem leaves pinnately divided, upper leaves toothed or entire, tip blunt.
Flowers white, petals 4, tiny, stamens 2; blooms and fruits May-Sept.
Fruit dry, capsule egg-shaped, to 0.3 cm, notched at tip.
Wetland status: UPL.
Frequency in NYC: Very infrequent.
Habitat: Open sites, roadsides.