Annulus relaxation and spore ejection recorded with 80.000 fps in situ, i.e. the sporangium was still attached to the false indusium. The bouncing of the sporangial stalk is very well visible. For better visibility, the original movie with a resolution of 72 x 110 pixels was digitally enlarged without interpolation (MOV, 20 fps, 432 x 660 pixels, 1750 KB).
Poppinga S, Haushahn T, Warnke M, Masselter T, Speck T
CC BY 4.0
<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4596474/bin/pone.0138495.s009.mov">S8 Video</a> from <cite style="font-style:normal">Poppinga S, Haushahn T, Warnke M, Masselter T, Speck T (2015). "<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4596474">Sporangium Exposure and Spore Release in the Peruvian Maidenhair Fern (Adiantum peruvianum, Pteridaceae)</a>". <i>PLOS ONE</i>. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1371/journal.pone.0138495">10.1371/journal.pone.0138495</a>. <a href="https://en.wikipedia.org/wiki/PMID" class="extiw" title="w:PMID">PMID</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pubmed/26444002">26444002</a>. <a href="https://en.wikipedia.org/wiki/PubMed_Central" class="extiw" title="w:PubMed Central">PMC</a>: <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4596474">4596474</a>.</cite>