Keywords
aesculus hippocastanum, biological, biology, botanical, botany, coloured, dispersal, exine, false-colour, false-coloured, gamete, gametes, grain, grains, horse chestnut tree, images, lobe, lobed, lobes, magnified image, microscopic subjects, nature, one, outer wall, plant, pollen, reproduction, reproductive, scanning electron micrograph, scanning electron microscope, sculpted, sem, single, tree, tri-lobed, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u16111841