MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Lily of the valley (Convallaria majalis) stigma. Darkfield illuminated polarised light micrograph of a transverse section through pollen grains (round) on the stigma of a lily of the valley plant. The stigma is the female part of the flower on which pollen grains (male) are deposited during pollination. Magnification: x200 when printed 10 centimetres wide.
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