Stem anatomy . The cortex containing cristarque cells, or without cristarque cells. Secondary thickening developing from a conventional cambial ring. Vessels without vestured pits. Reproductive type, pollination .
Unisexual flowers present .
Plants monoecious, or dioecious, or polygamomonoecious . Gynoecium of male flowers pistillodial, or vestigial, or absent. Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose, or racemose. Floral receptacle developing an androphore, or developing a gynophore, or with neither androphore nor gynophore.