With Scaevola (the darker blue flowers) below it.

It's a Cleome, an annual plant. They don't transplant well so let it grow there if you can, harvest the seeds when they ripen (it can be tricky, they pop open when ripe) and broadcast them where you want them, they can also be winter sown. They tend to reseed heavily.

Well fascinating, Buglossoides arvensis (Corn Gromwell) is not native...but is at least apparently one of the richest natural plant-based sources of omega-3 SDA (stearidonic acid) known. Of which the body converts (SDA) to EPA at a rate of up to 30%, compared to a typical conversion rate of ALA (alpha-linolenic acid found in most plants) of 3-6%. So, it's essentially a surprising little superfood plant that carries many benefits, despite being an import.

Yes, compare to this one: https://garden.org/plants/view/85885/Beaked-Corn-Salad-Valerianella-radiata/