Photo 3458205, (c) Jim Varnum, some rights reserved (CC BY-NC), uploaded by Jim Varnum

Attribution © Jim Varnum some rights reserved Uploaded by jim-botany Source iNaturalist Associated observations Photos / Sounds 2 photos What Texas Giant Ragweed (Ambrosia trifida var. texana) Observer jim-botany Date April 22, 2016 03:56 PM CDT Place John F Burke Nature Preserve, Farmers Branch TX (Google, OSM) Date Added April 22, 2016 04:29 PM CDT 4 IDs Research Grade View Sizes small medium large original