Slideshow and species account to come.
For more information:
https://gobotany.nativeplanttrust.org/species/ambrosia/artemisiifolia/?pile=composites
http://www.florafinder.com/Species/Ambrosia_artemisiifolia.php
https://www.minnesotawildflowers.info/flower/common-ragweed
https://www.illinoiswildflowers.info/weeds/plants/cm_ragweed.htm
