Thank you for your comments.
Here a few more:
Fern sporangium by
Rogelio Moreno, on Flickr
Nikon TE300, S Plan Fluor 40x/0.60, fluorescence (UV-2B), Canon 6D mounted on the front port of the TE300, image stacking.
Fern sporangium by
Rogelio Moreno, on Flickr
Nikon TE300, S Plan Fluor 40x/0.60, fluorescence (UV-2B), Canon 6D mounted on the front port of the TE300, image stacking.
Rogelio