Lepidium campestre is an annual or biennial herb, from a tap root, softly hairy, to 50 cm tall.
Leaves alternate, basal leaves long, narrow, widest above middle, sometimes lobed, stalked, stem leaves numerous, overlapping, stalkless, lance-shaped, to 4 cm long, base lobed, clasping stem, margin toothed.
Flowers white, petals 4, ca 0.2 cm long, stamens 6, anthers yellow; inflorescence to 15 cm long, unbranched, blooms May-June.
Fruit dry, capsules egg-shaped, to 0.6 cm, broadly winged, flattened, divided by a midrib, notched at top, two seeds, one on each side.
Wetland status: UPL.
Frequency in NYC: Infrequent.
Habitat: Open sites, roadsides, vacant lots.