As always, you make very complete and interesting posts. I think in Venezuela I have seen a similar plant, but I am not really sure. And it generally happens this way, there are plants that we think are bad herbs or that are insignificant, and it turns out that they are valuable vegetables that can help us in different ways. A big hug.
RE: [ ENG-ESP ] The polygonum arenastrum plant// La planta polygonum arenastrum : Its Small-Leaved Knotweed is used medicinally and leaves or plants are cooked// Su Knotweed de hoja pequeña se usa con fines medicinales y se cuecen hojas o plantas