The question is one x, Stout axile strand.
The petaloid perianth consists of two series, each with three members, which are joined below into a longer or shorter tube, followed by one whorl of three stamens; the inferior ovary is three-celled and contains numerous ovules on an axile placenta; the style is branched and the branches are often petaloid.
In many cases, however, the placentas are formations from the axis (axile), and are not connected with the carpellary leaves.