Timing is Key to Fern's Spore-Throwing Catapult (1 of 2) (IMAGE)

American Association for the Advancement of Science (AAAS)

Timing is Key to Fern's Spore-Throwing Catapult (1 of 2)

Caption

This is the sporangium of Polypodium aureum during sporangium opening. This image relates to a paper that appeared in the March 16, 2012, issue of Science, published by AAAS. The paper, by X. Noblin at CNRS in Nice, France, and colleagues was titled, "The Fern Sporangium: A Unique Catapult."

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Image courtesy of <i>Science</i>/AAAS

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