Primary medullary rays narrow. Reproductive type, pollination . Female flowers often with well developed but non-functional stamens. Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose.
Inflorescences usually cymes, thyrses or cincinni.
The floral asymmetry involving the perianth and involving the androecium. Free hypanthium absent. Sometimes 2 of the members joined. Androecium of male-fertile flowers exclusively of fertile stamens. Endothecium developing fibrous thickenings.