Invisible blooming

© Sylvain Gregoire/Inra © Sylvain Gregoire/Inra

Here we see blackcurrant flowers unfolding under a scanning electron microscope, which is capable of magnifying its subject 180 times. While the main organs are starting to form, the anthers (the top parts of the stamen, which produce the pollen) take on their characteristic shape. The four future pollen sacs are visible. Major anatomic changes are occurring in the receptacle. The ovarian cavity is developing, as is the style, the extenuated portion of the pistil connecting the stigma and ovary. The ova emerge afterwards.