Checked several more Ludwigia.
Ludwigia octovalvis is getting a bit closer to the flower color, sepal color and shape, and seed pod/capsule - unfortunately my back yard is like a desert and Ludwigia octovalvis grows in wet places. Plus the leaves are still off - so not the right answer yet. If I consume the L. octovalvis I may benefit with a longer life and better memory.
If my little plant was meant to live in the wet, it is a very determined little fellow to grow where it did. It deserves a second chance; I hope the seeds will germinate when the time comes.
I will begin again in the morning and concentrate on the Ludwigia search.
Marking this solved as some type of Ludwigia.
