Here you can see the antheridia and motile sperm of Athyrium filix-femina swimming in a drop of water under a microscope slide.
About The Author
I am particularly interested in macroevolutionary patterns and characters that diagnose large clades of ferns and lycophytes. My field work is centered in Mexico, Colombia, and Papua New Guinea. I am based in the Pringle Herbarium (VT) at the University of Vermont. If you have any ferns that you want identified, please send them to me!
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Don't miss this #EarthDay virtual event! On 4/21 @BiodiversityBen & Jacob @frondley_fern will present "Let's Botanize!" with a screening of their video "Movement without Muscles: The Sensitive #Fern" followed by a Q&A (@ArnoldArboretum co-sponsored). https://bit.ly/EarthWeekLetsBotanize
Polystichum kruckebergii from the Sierra Buttes (two years ago - wish I was there now!) #fernfriday #fernsofinstagram https://instagr.am/p/CGseUccp3Aa/