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Using their technique, the team was able to observe, for the first time, the elongation of multiple pollen tubes within a living pistil and their unique attraction to female tissue.

The study described how a plant's floral tubes produce volatile compounds to sterilize their stigma, the part of the pistil that collects pollen, to protect against attack by pathogens.

Watch to see whether the pistils begin to turn red and the leaves start to change colors.

The white petals of the flower curl around the tightly bunched cluster of pistils at the center, reaching to all four edges of the print.

Later that day, her students would tear those silky petals from their stems, counting stamens and pistils to learn botany.