Primary medullary rays narrow. Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose, or racemose. Sometimes the androecium acyclic .
Calyx lobes markedly longer than the tube.
Corolla lobes markedly longer than the tube. Androecium exclusively of fertile stamens. Pollen shed as single grains. Placentation axile, or apical. Outer integument contributing to the micropyle.