Stem anatomy . Primary vascular tissue in a cylinder, without separate bundles, or comprising a ring of bundles. Secondary thickening developing from a conventional cambial ring. Vessel end-walls scalariform, or simple, or scalariform and simple. Reproductive type, pollination .
Fertile flowers hermaphrodite .
Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose. Inflorescences usually racemes, panicles or heads. The floral irregularity involving the perianth, or involving the perianth and involving the androecium. Free hypanthium absent .