Floral anatomy ofCuscuta hyalina Roth.Cuscuta europaea L.,Cuscuta chinensis Lamk. andCuscuta calycina Webb, and Berth, and embryology ofCuscuta europaea L.,Cuscuta calycina Webb, and Berth, have been investigated. Sepals, petals and stamens are singlet-traced and the corpels have only the ventral bundles. The disc is ovarian without vascular supply inCuscuta hyalina,Cuscuta chinensis andCuscuta calycina. The placentation is anatomically parietal. The anther wall is 4-layered and pollen is shed at 2-celled stage. Ovule is tenuinucellate, unitegmic and anatropous. Archesporial cell directly functions as megaspore mother cell which gives rise to bisporic Allium type of embryo sac. The synergids are persistent. Endosperm is nuclear and the embryo development follows Solanad type.