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Echinops

The spiny foliage suggests a true thistle (Cirsium), but the heads are very different in shape and structure. The spherical compound heads consist actually of numerous 1-flowered heads, each with an involucre of several spine-tipped phyllaries surrounded by abundant stiff hairs or setae around the base. Other species are cultivated and may also escape.

All species found in Echinops

Echinops sphaerocephalusGLOBE-THISTLE 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. September 20, 2017. http://michiganflora.net/genus.aspx?id=Echinops.