SCIMAT / SCIENCE PHOTO LIBRARY SCIMAT / SCIENCE PHOTO LIBRARY
Pollen grains of the yellow-blooming Ranunculus arvensis (Corn Buttercup) by SEM. The plant is native to Europe, but it can be found on other continents as an introduced species and sometimes a weed, including in North America and Australia. Image width: 53.5 micrometers. Magnification: 1870x if the image is printed 10 cm wide.
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