Brassica
Brassica tournefortii, Mustard family (Cruciferae)
Flowers:	Cluster of small 4-petaled pale yellow flowers (to 1/4" wide) atop a tall stem.
Leaves:	Large, roughly textured, with toothed edge - smaller near top of stem.
Height:	Grows to 3'.
Photographed January 19, roadside in the Superstition Mountain area.