Xylem with tracheids. Vessel end-walls scalariform, or simple. Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology . Free hypanthium absent.
Calyx lobes markedly longer than the tube.
Corolla lobes markedly longer than the tube. Androecium exclusively of fertile stamens. Gynoecium 2 carpelled. The pistil 2 celled . Ovary 2 locular.