Stem anatomy . Xylem with vessels. Root anatomy . Vessel end-walls nearly always simple. Reproductive type, pollination .
Floral nectaries present, or absent.
Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose. Rarely the perianth acyclic, or the androecium acyclic. Perigone tube present, or absent. Endothecium developing fibrous thickenings.