Alyssum gmelinii

About

Alyssum montanum is a species of flowering plant belonging to the family Brassicaceae. It is an evergreen, prostrate perennial with small, hairy, greyish leaves. It typically grows to 10-15 centimeters tall and 30-45 centimeters across. It produces tiny, yellow, fragrant flowers from May to July. These flowers are typically 4-6 centimeters across and borne in dense racemes.

Summary from Wikipedia