Malta Star Thistle

Malta Star Thistle is spreading throughout Tuolumne and Calaveras counties. Malta star thistle looks like yellow star thistle but has shorter spines. It is being reported from Columbia, Tuolumne and up into US Forest Service property. In the Italian Bar and Apple Colony Road areas, Malta star thistle is forming thick stands.

http://www.unce.unr.edu/publications/files/nr/2002/FS0286.pdf