1. The microspore tetrads are arranged in isobilateral, linear or decussate manner. The tapetum forms a periplasmodium. The pollen grain has a conspicuous generative cell and a degenerating tube nucleus. The degeneration of some of the pollen grains is also observed. The endothecium is not well developed. 2. In the nucellus there is usually a single archesporial cell which directly functions as the megaspore mother cell. Occasionally, a multicellular archesporium is noticed. 3. The embryo sac is normal in which the antipodals are organised into cells. 4. The embryo is of theSagittaria-type. 5. The primary endosperm nucleus divides accompanied by a wall formation. The upper chamber lodges the embryo and the lower one along with the persisting antipodals assumes a haustorial role. The endosperm tissue is feebly developed.