Cleftleaf Wildheliotrope
Phacelia crenulata
Phacelia crenulata is a species of phacelia native to the southwestern United States and northern Mexico. Its common names include notch-leaved phacelia and cleftleaf wild heliotrope. It is an annual plant growing 7-60 centimeter tall, with crenate to deeply lobed leaves up to 8 to 12 centimeters in length. The flowers are violet to blue-purple in color and up to one centimeter long.
Calscape
https://calscape.org/loc-California/Notch-leaved%20Phacelia%20(Phacelia%20crenulata)