Photo 10386316, (c) Patrick Sweeney, some rights reserved (CC BY-NC), uploaded by Patrick Sweeney

Attribution © Patrick Sweeney some rights reserved Uploaded by pwsweeney Source iNaturalist Associated observations Photos / Sounds 2 photos What Common Ragweed (Ambrosia artemisiifolia) Observer pwsweeney Date September 11, 2017 01:29 PM EDT Place Yale University, New Haven, CT, US (Google, OSM) Date Added September 11, 2017 01:50 PM EDT Description Growing in lawn 2 IDs Research Grade View Sizes small medium large original