This image showcases a microscopic photograph of a geranium (Geranium) stigma, clearly presenting the multi-lobed structure of the stigma and the yellow pollen grains attached to it. The stigma, as the part of the pistil that receives pollen, is crucial in plant reproduction. In the image, the stigma is star-shaped and split, with a surface covered in fine hairs, and yellow pollen grains scattered on it. The pure black background highlights the details of the microscopic structure. This work was photographed by Martin Oeggerli for National Geographic, using high-magnification microscopic photography to present the plant reproductive details that are hard to observe with the naked eye in a stunning visual form, showcasing the intricacy and scientific beauty of the natural microscopic world. Geranium belongs to the Geraniaceae family and is widely distributed in temperate regions. The shape of its stigma helps improve pollination efficiency, which is an evolutionary result of plants adapting to the environment.