ID for a friend, please. Volunteer plant found in NE Texas. This doesn't seem to be a match for P. grandiflora, umbraticola (as sold in stores as 'ornamental purslane'/moss roses,) oleracea, or pilosa. Could P. umbraticola seeds produce this plant - straight species vs. hybrid store plant?

Other species listed on USDA plants database for TX don't match either. Thanks for looking, and any suggestions, comments!