The disk is similarly rimmed by vescicular hairs, but here they function as stigmatic hairs. The column is hollow forming a stylar canal which is contiguous with the locule. Ovary unilocular with intrusive parietal placentation. Ovules are found only on the placental lobes. For Pilostyles , no intrusive placentae occur, thus the locule is circular in cross section.
Ovules occur along the entire inner surface.
Both layers cound about ten cells in circumference. The inner layer consists of small, densely protoplasmic cells, about 10 um in width and elongated in the length direction of the ovule. The cells bordering the endostome are large and papiillate. The outer layer consists of more or less cubic cells, about 20 um in width, with large vacuoles. Cells above the level of the nucellar apex are radially stretched and help to close the micropyle.