Included' phloem absent. Pith with diaphragms, or without diaphragms. Reproductive type, pollination . Unisexual flowers absent . Inflorescence, floral, fruit and seed morphology .
Corolla lobes markedly longer than the tube.
The androecial bundles at least sometimes opposite the corolla members . Androecium exclusively of fertile stamens. Endothecium developing fibrous thickenings. Anther epidermis persistent. The initial microspore tetrads tetrahedral, or isobilateral, or decussate.