Secondary thickening absent. Xylem with vessels. Root anatomy . Root xylem with vessels. Reproductive type, pollination .
Unisexual flowers present .
Female flowers without staminodes. Gynoecium of male flowers pistillodial to vestigial. Anemophilous, or entomophilous. Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit racemose.