London Rocket
Sisymbrium irio, Mustard family (Cruciferae)
Flowers:	Very small yellow flowers, to 1/8", clustered at top of stem. Thin spikes with yellow tips may surround the cluster, like a spray of fireworks.
Leaves:	Long, dark green leaves, wavy and pointed.
Height:	Grows to 3' high.
Photographed March 23, near Superstition Mountain.. Typically found near roadsides.