Psoralea is a genus in the legume family (Fabaceae).
It includes the subgenus Psoralea subg. Pediomelum (Rydb.) Ockendon, also treated as genus Pediomelum.
Although most species are poisonous, the starchy roots of P. esculenta (breadroot, tipsin, or prairie turnip) and P. hypogaea are edible. A few species form tumbleweeds.
Common names include tumble-weed (P. lanceolata), and white tumbleweed.