The foldscope image shows a cluster of pollen grains from a hibiscus flower. They are roughly spherical or oval shaped and vary in size. The sample was obtained at 7:40PM on 5/6/19 from flower bushes along the Olive Walk near Page House at the California Institute of Technology. The sample was obtained by gently rubbing off pollen grains from the flower onto a glass slide. The species of the flower that the pollen belongs to is hibiscus rosa-sinensis. #caltechbi1
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