Hairy bittercress

Life Span: Winter annual but can persist year-round in moist, shaded environments.
Habitat: Occurs in disturbed areas; shores of rivers, lakes, swamps and wetlands; in greenhouses, container pads, growing media, and nursery pots. It is most often found in irrigated or shaded areas but can grow in full sun.
Fruit and Seeds: Small brown to black seed are produced in pods called siliques, which are cylindrical or cigar shaped, and up to 1 inch long. The fruit is dry and when mature it splits open and forcibly expels seeds up to 6 feet
Seedling: Cotyledons are small, round, and yellowish-green in color. The first true leaves are simple and slightly lobed.
Shoot: Stems are usually 3 to 8 inches long and often reddish to purple in color toward the base of the plant and becoming greener up the stem. Leaves are alternately arranged on the stem, compound, may be lobed or slightly serrated, often club-shaped, and generally on the lower portion of the stem forming a basal rosette.
Inflorescence: Occurs at the top of the stem in clusters called racemes. Individual flowers are white with four petals and can have either four, five, or six stamens.