Nasturtium W.T. Aiton, Hort. Kew. ed. 2, 4: 109. 1812

[nom. cons.].

Tribe: Cardamineae Dumort.

Notes. – A genus of five species, of which two are native to North America, one in Morocco, one European species, and another a crop and cosmopolitan weed naturalized throughout world (AL-SHEHBAZ & PRICE, 1998).

The genus was so broadly delimited by KUNTZE (1891) to include more than 50 species, but most other earlier authors, including Boissier in Flora Orientalis, circumscribed it to include species currently assigned to Barbarea and Rorippa .