Secondary thickening absent, or developing from a conventional cambial ring. Vessel end-walls simple. Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose.
Inflorescences usually cymes, often dichasial or tending to cincinni .
Free hypanthium present to absent. Hypogynous disk present. Androecium exclusively of fertile stamens. Endothecium developing fibrous thickenings. Anther epidermis persistent.