This species includes varieties called bok choy, napa cabbage, turnip, rapini, and totsoi
This plant has been used by humans for so long that its origins are unknown. Today it is found in most parts of the globe and is used in all its varieties, mostly as vegetables. The seeds are also used to make canola oil.
A low-growing “trefoil” weed of lawns and disturbed, nitrogen-poor soil, distinguished by its tiny hop-like yellow flower clusters, pointed tips on each leaflet, and the terminal leaflet on a longer stalk or petiole