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Lepidium (weeds) L. - (pepperweeds)
The genus Lepidium has a world-wide distribution and contains more than 200 species of herbaceous plants with a few shrubs and vines. Garden cress, Lepidium sativum, is cultivated and Lepidium latifolium may also be eaten. The latter is, however, invasive in the Americas competing with native species and is also considered an agricultural weed in grasslands. Various other species are also significant weeds.
The plants typically grow to a height of around 50 cm. They have have deep taproots and small whitish or greenish flowers, arranged in short spikes, each with 4 petals. The small, flat and round fruits contain only 2 seeds.
Currently, the following species have been entered into the system: