Chrysolina fastuosa Thorax 1 klein

Sac of spores (sporangium) of Dryopteris filix-mas is among the "must-haves" of microscopists. This year I was lucky and found them in the perfect status. The black dots are the spores flung as from a catapult.

Technical details:
Olympus BX-60 with HBO lamp and UV unit WB (Wide Blue)
Objektive: 10 x S APO
Nikon Z 6
Stack: with more than 400 layers

And because they are so beautifil, another picture of this series.

Wurmfarn 1