Thlaspi arvense is a foetid Eurasian plant having round flat pods; naturalized throughout North America. It is also related to the Lepidium

Lepidium

Lepidium is a genus of plants in the mustard family Brassicaceae. It includes about 175 species found worldwide, including cress and pepperweed; additional common names include peppercress, peppergrass, and pepperwort...

species in the cabbage family.

Edible uses

The field pennycress has a bitter taste; it is usually parboiled to remove the bitter taste. This is mostly used in salads, sometimes in sandwich spreads. It is said to have a distinctive flavour.