Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose, or racemose. The floral irregularity involving the perianth and involving the androecium. Free hypanthium absent . Calyx lobes markedly shorter than the tube to markedly longer than the tube.
Corolla lobes markedly shorter than the tube, or about the same length as the tube.
Androecium exclusively of fertile stamens, or including staminodes. Endothecium developing fibrous thickenings. Anther epidermis persistent. The initial microspore tetrads tetrahedral, or isobilateral, or decussate. Placentation basal to axile, or axile.