The Fern Sporangium: A Unique Catapult

@article{Noblin2012TheFS,
  title={The Fern Sporangium: A Unique Catapult},
  author={Xavier Noblin and N. O. Rojas and Jared Westbrook and Coraline Llorens and M{\'e}d{\'e}ric Argentina and Jacques Dumais},
  journal={Science},
  year={2012},
  volume={335},
  pages={1322 - 1322}
}
High-speed observations reveal how rapid changes in cell shape powerfully eject fern spores. Various plants and fungi have evolved ingenious devices to disperse their spores. One such mechanism is the cavitation-triggered catapult of fern sporangia. The spherical sporangia enclosing the spores are equipped with a row of 12 to 13 specialized cells, the annulus. When dehydrating, these cells induce a dramatic change of curvature in the sporangium, which is released abruptly after the cavitation… 

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