Photo 212784, (c) mrnaturalist, some rights reserved (CC BY-NC)

Attribution © mrnaturalist some rights reserved Uploaded by mrnaturalist Source iNaturalist Associated observations Photos / Sounds What Rough Cocklebur (Xanthium strumarium) Observer mrnaturalist Date November 27, 2012 08:58 AM PST Place Los Angeles County, US-CA, US (Google, OSM) Date Added December 1, 2012 11:19 AM PST 4 IDs Research Grade View Sizes small medium large original