It's a little tough to tell without seeing the structure and coloration of the leaves, but judging by the flowers, it might be a variety of eriogonum fasciculatum, aka California buckwheat.

Kay

Here is a link that might be useful: images of California buckwheat.

Agreed that this one is a native California buckwheat. We grow three varieties in our San Diego garden and all are butterfly magnets that require good drainage and need little else in the way of care.

Thanks so much!! You got it!