Image: Equisetum x ferrissii Door County Wisconsin

Description: Equisetum x ferrissii, now recognized as a hybrid (E. hyemale × laevigatum), it could also be described as a hybrid of the scouringrush and smooth horsetails. Collected by Vohnette, J. H. on June 14, 1890 from the Lake Michigan shore, north of Life Saving Station []Coast Guard Station Sturgeon Bay] on Sturgeon Bay Canal.
Title: Equisetum x ferrissii Door County Wisconsin
Credit: http://midwestherbaria.org/portal/collections/individual/index.php?occid=24541271&clid=0
Author: Miami University, Willard Sherman Turrell Herbarium (MU); entire herbarium is public domain[1]
Permission:   This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission. http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
Usage Terms: Creative Commons Zero, Public Domain Dedication
License: CC0
License Link: http://creativecommons.org/publicdomain/zero/1.0/deed.en
Attribution Required?: No