Photo 6628466, (c) Don Rideout, some rights reserved (CC BY-NC), uploaded by Don Rideout

Attribution © Don Rideout some rights reserved Uploaded by lagoondon Source iNaturalist Associated observations Photos / Sounds 2 photos What Tubular Knapweed (Volutaria tubuliflora) Observer lagoondon Date March 14, 2017 09:55 PM PDT Place San Diego County, CA, USA (Google, OSM) Date Added March 18, 2017 09:57 PM PDT 4 IDs Research Grade View Sizes small medium large original