Flower of Portulaca grandiflora 'Sundial' in longitudinal section. Note that the ovary is half inferior and that the placentation is basal. The drawing on the right shows a drawing of a similar flower, except that a style is absent and the stigmas are sessile on top of the ovary.
Photo by K. R. Robertson and D. L. Nickrent from plants found in Champaign County, Illinois.