Streptanthus heterophyllus Caulanthus heterophyllus is a species of flowering plant in the family Brassicaceae known by the common names San Diego wild cabbage and San Diego jewelflower.

It is a member of the chaparral plant community and is common in areas recovering from wildfire.

This plant has a smooth, erect stem which may be thin or quite stout.

Each flower is showy, with a magenta to purple hollow urn-shaped body and a mouth surrounded by contrasting white petals which curl outward.

The fruit is a silique several centimeters long containing winged seeds.