Pollen: genus 2 surfaces

The Dartmouth College Electron Microscope Facility has made the following picture of Pollen featuring a variety of common plants: sunflower (Helianthus annuus), morning glory Ipomoea purpurea, hollyhock (Sildalcea malviflora), lily (Lilium auratum), primrose (Oenothera fruticosa) and castor bean (Ricinus communis). The image is magnified about 500 times. The spherical large green ball has a radius of about 50 micrometers. (The original source picture is not colored (as it was taken by an electron microsope which). According to Wikipedia, the picture had been colorized by Medium69. Quite well done by the way if one compares with the original gray picture.) What is remarkable also that one sees some surfaces with non-trivial topology. One can make out some genus 2 surfaces, bretzels with two holes. Pollen picture from Dartmouth College Electron Microscope Facility Also the following picture is from Dartmouth shows a scanning electron microscope image of a pollen. It is from the ``Heavenly blue morning glory". Also this image has pseudo-coloring only as electron microscope images are only black and white, since the imaging source is electrons and not light. The page gives the following attributes: "Solanales, Convolvulaceae, Ipomea purpurea, Camera: Zeiss DSM 962 SEM". Morning glory pollen from  Dartmouth College Electron Microscope Facility