a–d. Precocious cytokinesis in prophase II (a), metaphase II (b), anaphase II (c) and telophase II (d); e. Completion of successive cytokinesis showing formation of secondary cell plates between sister nuclei (arrows); f. Telophase II with precocious cytokinesis showing a fused nucleus in a daughter cell and separate nuclei by phragmoplast (arrow) in the other cell; g. Telophase II with precocious cytokinesis showing nuclear fusion in both daughter cells; h. Triad with a fused nucleus; i. Dyad with two fused nuclei. Bars are equal to 10 μm.