Hooker's Thistle (Cirsium hookerianum)

A native wildflower in western North America' this plant photographed near Calgary, Alberta

by Todd_Boland Jan 1, 2006 10:40 PM

Hooker's Thistle in Alberta, Canada, July 1998

by kennedyh Mar 13, 2006 11:00 PM

On Forgetmenot Ridge, alpine environment, ~2200m elevation, eastern slope Rocky Mts., Alberta, Canada.

by altagardener Aug 8, 2011 9:57 AM