White Flowered Forbs

White Flowered Forbs
African rue
Broadleaved pepperweed
Field bindweed
Hary whitetop
Lens-podded hoarycress
Oxeye daisy
Poison hemlock
White clover
White sweetclover


Lens-podded Hoarycress
Cardaria chalepensis (L.) Hand.-Maz. (Mustard family, Brassicaceae)


Multi-stemmed perennial forb (may take on the appearance of a shrub), 8 to 25-1/2 inches tall; seed production is prolific; new shoots arise from buds on lateral roots or root fragments; establishes dense stands that exclude other vegetation.

Leaves: Gray-green, alternate, obovate, lanceolate, and oblong to elliptic; surfaces, especially lower, sparsely to densely covered with short white hairs, margins irregularly toothed to entire; basal leaves short-stalked; upper leaves sessile, with rounded to acute- lobed bases that clasp the stem, 3 inches long and 1 inch wide or smaller.

Flowers: Flowers April to August; inflorescences often flat- topped; small (3/16 inch long), fragrant, white, 4-petaled flowers are numerous; sepals are glabrous.

Fruits: Pods disc-shaped, round to broadly (ob)ovate or barely kidney-shaped in outline, 1/8 to 3/8 inch long, 1/8 to 1/4 inch wide, glabrous; style persistent, 1/16 to 1/8 inch long at the apex; seeds 1 to 2 per chamber, ovoid, slightly flattened, reddish-brown, less than 1/8 inch long and 1/16 inch wide.


Cultivated and disturbed or degraded moist sites in meadows, grassland, chaparral, woodland, forest, and riparian communities, and roadsides; generally grows on alkaline to saline soils, but tolerates many soil types and moisture conditions within elevations that generally range from 3,300 to 6,000 feet.


Reproduces vegetatively from creeping roots and less importantly by seed. This species is an aggressive weed; mature plants develop extensive systems of persistent, deep vertical and horizontal roots to depths of 6-1/2 feet or more. Root fragments generate new plants, but regeneration is poor in dry soils.


Native to central Asia; this species is difficult to distinguish from hairy whitetop and whitetop in the seedling and vegetative states; lens-podded hoarycress competes poorly with shrubs in natural communities. Arizona prohibited noxious weed and New Mexico Class A noxious weed.

Collage of images for lens-podded Hoarycress

Forest Service Shield
Invasive plants and weeds of the national forests and grasslands in the southwestern region
Lens-podded hoarycress flowers Lens-podded hoarycress plants Lens-podded hoarycress fruit Lens-podded hoarycress plants