Photo 1021806, (c) Kenneth Rangel, some rights reserved (CC BY-NC), uploaded by Kenneth Rangel

Attribution © Kenneth Rangel some rights reserved Uploaded by thesunisbig Source iNaturalist Associated observations Photos / Sounds What Common Spikeweed (Centromadia pungens ssp. pungens) Observer thesunisbig Date July 17, 2014 11:10 AM PDT Place The Presidio of San Francisco, San Francisco, CA, US (Google, OSM) Date Added July 31, 2014 09:12 AM PDT 2 IDs Research Grade View Sizes small medium large original