Photo 51777, (c) Sam McNally, all rights reserved, uploaded by Sam McNally

Attribution © Sam McNally all rights reserved Uploaded by biosam Source iNaturalist Associated observations Photos / Sounds What Bull Thistle (Cirsium vulgare) Observer biosam Date August 28, 2011 Place 37.6205..., -122.49... (Google, OSM) Date Added August 29, 2011 01:03 PM PDT Description Some type of thistle. Native? Exotic? 1 comment 3 IDs Research Grade View Sizes small medium large original