Cirsium gallery
Thistle Gallery
Bull thistle
Buffalo Run Park (Centre Co)
by Maria G. Pavlova on 08/14/2021
Canadian thistle
North Park (Allegheny Co)
by Maria G. Pavlova on 06/24/2020
Swamp thistle
Beaver Co
by Mark Welchley on 08/25/2014
Wavyleaf thistle
