Secondary thickening absent. Xylem without tracheids. Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose.
Corolla lobes markedly longer than the tube.
Androecium exclusively of fertile stamens. Endothecium developing fibrous thickenings. The initial microspore tetrads tetrahedral. Anther wall initially with one middle layer. Pollen shed as single grains.