This slide was in a box of botanical slides by Ernie Ives. It's a transverse section of the stem of a Trollius (Mountain Globe Flower). There was no stacking but it is stitched from 14 images and it is under crossed polarizers.
Cross Polarized Trollius stem
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Cross Polarized Trollius stem
Last edited by micro_pix on Sat Jan 12, 2019 3:10 pm, edited 4 times in total.