The initial microspore tetrads tetrahedral, or decussate. Outer integument not contributing to the micropyle. Polar nuclei fusing prior to fertilization. Endosperm formation nuclear. Embryogeny caryophyllad, or solanad.
Capsules usually denticidal, or valvular .
Seeds endospermic, or non-endospermic. Endosperm not oily. Perisperm present . Seeds with starch. Physiology, biochemistry .