Secondary thickening developing from a conventional cambial ring. Vessel end-walls scalariform, or simple, or scalariform and simple. Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose.
Inflorescences usually racemes, panicles or heads.
The floral asymmetry involving the perianth, or involving the perianth and involving the androecium. Free hypanthium absent . Calyx lobes markedly longer than the tube. Petals clawed, or sessile. Androecium exclusively of fertile stamens.