Xylem with libriform fibres. Vessel end-walls simple. Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology . The terminal inflorescence unit cymose.
Calyx lobes markedly shorter than the tube.
Androecium exclusively of fertile stamens. The initial microspore tetrads tetrahedral. The pistil 1 celled. Ovary 1 locular . The 'odd' carpel posterior.