"Stages in the division of a grandmother cell of microspores or pollen grains of a lily, somewhat diagrammatic. 10, bipolar spindle with double chromosomes aligned at the equator." -Stevens, 1916

Division of Grandmother Cell Stage 10

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

"Stages in the division of a grandmother cell of microspores or pollen grains of a lily, somewhat diagrammatic. 7, thread transversely segmented into double chromosomes." -Stevens, 1916

Division of Grandmother Cell Stage 7

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