Peppergrass

Lepidium is a low growing non-native plant with leaves radiating outward on long flanged stems. Color ranges from dark green to a dark reddish-green. It is common in camp.

Lepidium cotyledons are oval to egg-shaped and soon grow out on long stems. The cotyledons are nerveless and lack the coarse hairs that appear on later leaves.

Subsequent leaves are coarsely pubescent (hairy) and spoon-shaped. Toothed margins appear only at later stages.


Description:
Annual or biennial herbs; stems 2-7 dm long, usually single from base, branched above, occasionally many-branched, usually puberulent. Basal leaves oblanceolate, 4-15 cm long, sharply toothed to pinnatifid, occasionally bipinnatifid, upper leaves much-reduced, oblanceolate to linear, margins dentate to entire. Flowers in elongate racemes usually 1.5-8 cm long, nearly the same diameter throughout; sepals ca. 0.5 mm long, usually caducous, margins white; petals spatulate, ca. 0.6-1 mm long; stamens 2 (4, 6). Silicles suborbicular to broadly elliptic, 2-4.2 mm long, the apical notch broad, prominent, the margins clearly exceeding the style. Seeds 1.5-2 mm long (Wagner et al., 1999; p. 409).