Cardaria draba hoary cress Brassicaceae CADR*; Bx, pb (DeCandido 2001); R (DeCandido 2001);

Cardaria draba. commons.wikimedia.org

Cardaria draba. commons.wikimedia.org (Accessed 11/2017).

Cardaria draba is a perennial herb to 60 cm tall, aggressively colonial from creeping rhizomes, stems erect, hairy below.

Leaves alternate, stem leaves egg-shaped, base lobed, stalkless, clasping stem, to 9 cm long, 4 cm wide, basal leaves to 10 cm, stalked.

Flowers white, 4-parted, to 0.4 cm; inflorescence branched.

Cardaria draba mature fruit. Photo by D. Walters & C. Southwick. Table Grape Weed Disseminules. idtools.org

Cardaria draba mature fruit. Photo by D. Walters & C. Southwick. Table Grape Weed Disseminules. idtools.org (Accessed 11/2017).

Fruit dry, capsules heart-kidney-shaped, to 0.3 cm long, 0.5 cm wide, wider than long, flattened side-to-side with seam along center.

Wetland status: UPL.

Frequency in NYC: Very infrequent.

Origin: Europe.

Habitat: Roadsides, open areas. An agricultural weed.