Magnified 192x, this scanning electron micrograph (SEM) revealed some of the morphologic ultrastructure found amongst a collection of pollen found within the dehisced, or split open, anther of a yellow "Fireworks" sundrops, Oenothera fruticosa flower. Amongst this grouping were pollen grains representing various stages of drying through which these pollen grains pass as they mature. The drying of the grains changes their shape making them more elliptical-shaped, and less circular.
CDC/ Janice Carr, Betsy Crane
December 2, 2012
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