|Spatulated leaves are purslane|
According to Green Deane, "Regardless of what one calls it, purslane contains more omega 3 fatty acids than any other plant source in the solar system, and an extraordinary amount for a plant, some 8.5 mg for every gram of weight. It has vitamin A, B, C and E — six times more E than spinach — beta carotene — seven times more of that than carrots — magnesium, calcium, potassium, folate, lithium — keep you sane — iron and is 2.5% protein. Two pigments, one in the leaves and one in the yellow blossoms, have been proven anti-mutagenic in lab studies, meaning they help keep human cells from mutating, which is how cancer gets started. And you get all that for about 15 calories per 100 gram (three ounce) serving. As a mild diuretic, it might even lower your blood pressure as well. "
I don't remember ever seeing it before in the yard and it was growing in a shady area.