This award is in honor of Dr. Wherry's many contributions to the floristics and patterns of evolutions of ferns. This award is given for the best paper presented during the contributed papers session of the Pteridological Section.
2007 : Renee A. Lopez-Smith, Southern Illinois University
For her paper; " Sperm cell architecture and the neck canal in diploid and tetraploid Ceratopteris cytotypes: does size matter?" Her co-author was Karen Renzaglia.