Belongs to the ditypic genus: D. tenuinervis and D. thouarsii; Subfamily: Proteoideae; Tribe: Conospermeae.
Large to very large tree of 30 m, dioecious, heterophyllous. Leaves spiral, simple, chartaceous to coriaceous. Inflorescences axillary, the males in panicles, multiflorous; female inflorescences in a single raceme. Fruit ovoid.

Dilobeia differs from the genera inside the Proteaceae by its unisexual flowers.  Phylogenetically, it forms a robust clade with the monotypic genera Beaupreopsis and Cenarrhenes (Sauquet & al., 2009).