Sisymbrium sophia

About

Descurainia sophia is a species of flowering plant in the cabbage family Brassicaceae. Common names include flixweed, herb-Sophia and tansy mustard. It is an annual plant that reproduces by seeds. It is a dominant weed in dark brown prairie and black prairie soils of southern Alberta. Its stem is erect, branched, and 4–30 in (10–76 cm) high. It was once given to patients with dysentery and called by ancient herbalists Sophia Chirurgorum, "The Wisdom of Surgeons". It is the type species of the genus Descurainia and of the rejected genus Sophia Adans.

Summary from Wikipedia