Primary medullary rays narrow. Tile cells present. Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology . Free hypanthium absent.
Calyx lobes about the same length as the tube.
Corolla lobes markedly shorter than the tube. Androecium exclusively of fertile stamens. Pollen shed as single grains. Gynoecium 2 carpelled. Carpels reduced in number relative to the perianth.