Lepidium bonariense, L. Lepidium densiflorum, Schrader

10. L. bonariense L. , Sp. Pl. 645 (1753).

Unbranched annual or biennial; stem with long, unbranched hairs. All leaves pinnate and more or less hairy. Sepals c. 0-5 mm; petals shorter than sepals. Pedicels 2-3 mm in fruit. Silicula 2-3-5 x 2-3 mm, with narrow, shallow apical notch. Introduced and naturalized in W. Europe. [Be Br Ge Ho Hu No.] (S.E. South America.)

11. L. densiflorum Schrader , Ind. Sem. Horti Gotting. 4 (1832)

(£. apetalum sensu N. Busch in Komarov, non Willd.).

Annual or biennial; stem single, erect, branched above, papillose. Basal leaves long-petiolate, elliptical, usually deeply toothed; upper cauline leaves linear-lanceolate, remotely toothed and ciliate, lateral veins visible. Sepals c. 1 mm; petals filiform, shorter than the sepals or absent. Pedicels 4-5-5 mm in fruit. Silicula 3-4 x 2-5-3 mm, orbicular-ovate, narrowly winged in the upper third, narrowly but shallowly notched; style very short. Widely introduced and naturalized in Europe. [Be Br Cz D a Fe Ga Ge He Ho H u It N o Po Rs (C, W, E) Su.] (North America.)