Malcolmia africana

About

Strigosella africana, or African mustard, is a species of flowering plant in the family Brassicaceae. It is an annual plant which ranges from the Mediterranean Basin through western and Central Asia, the Caucasus, Ukraine, southern and Eastern European Russia, and Mongolia to India and China. It has naturalized elsewhere, including much of western North America and parts of France, Central Europe, and Argentina. It is invasive in Nevada and Utah.

Summary from Wikipedia