pepperwort

Any of several species of perennial plant in the genus Lepidium (originally specifically dittander, species Lepidium latifolium), which is a member of the mustard and cabbage family.

Our common Pepperwort sends forth somewhat long and broad leaves, of a light bluish-green colour, finely dented about the edges and pointed at the ends […]

Any of various species of plant in the genus Marsilea, especially Marsilea minuta.