Its shape is cupular, and five subtle dentations are present.

The cupular calyx is inflated in some species.

The female flowers have a concave cupular body base with sterile stamens.

The calyx is 5-dentate and campanulate to cupular.

Calyx cupular, 5-parted, caducous.

Disk cupular with many seeds, ovate-shaped, compressed, with scanty endosperm, with a tuft of hairs at one end, dark brown.

Male flowers have 2-loculed anthers, broadly ellipsoid, dehiscent by apical pores; apical cupular body base convex; gynostegium blood red.

Cupular space is closed on the outside as a tower or dome with steeple abarrocado very flat, similar to those likely to be in Royal Palace of La Granja de San Ildefonso near Segovia.

Its shape is cupular, and five subtle dentations are present.

The cupular calyx is inflated in some species.

The female flowers have a concave cupular body base with sterile stamens.

The calyx is 5-dentate and campanulate to cupular.

Calyx cupular, 5-parted, caducous.

Disk cupular with many seeds, ovate-shaped, compressed, with scanty endosperm, with a tuft of hairs at one end, dark brown.

Male flowers have 2-loculed anthers, broadly ellipsoid, dehiscent by apical pores; apical cupular body base convex; gynostegium blood red.

Cupular space is closed on the outside as a tower or dome with steeple abarrocado very flat, similar to those likely to be in Royal Palace of La Granja de San Ildefonso near Segovia.