ClipArt ETC
"Stages in the division of a grandmother cell of microspores or pollen grains of a lily, somewhat diagrammatic. 13, division of mother-cell nuclei, the longitudinally split chromosomes seen in 11 again appearing." -Stevens, 1916

Division of Grandmother Cell Stage 13

"Stages in the division of a grandmother cell of microspores or pollen grains of a lily, somewhat diagrammatic.…