Histogram of pollen sizes

Here’s a histogram of pollen sizes (~30 grains per species) from 3 individual plants of Coreopsis palmata, Echinacea angustifolia, and Heliopsis helianthoides.


Greg outlined the methods taking the measurements here. Greg, what software program did you use?


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  • Greg Diersen

    For the measuring of the pollen I used the scopephoto software that came with the camera. It had a setting for pixels since the magnification and field of view were consistent for all images. I tallied it with an excel sheet.

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