Included' phloem absent. Vessels without vestured pits. Wood parenchyma apotracheal . Pith with diaphragms. Reproductive type, pollination .
Unisexual flowers present .
Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit racemose. Inflorescences pedunculate heads, short racemes or compact umbels, or sometimes reduced to a single flower. Free hypanthium absent. Pollen shed as single grains.