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Making America's Best Idea Even Better
Wind Cave National ParkWinged Sedge
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Wind Cave National Park
Horsetails - Smooth Scouring Rush
 
Smooth Scouring Rush - Equisetum laevigatum
NPS Photo by Jim Pisarowicz
Smooth Scouring Rush, Smooth Horsetail - Equisetum laevigatum
 
Smooth Scouring Rush derives its name because early seetlers and Indians used them for scouring and polishing.  Their grittiness comes from the high silica content of their cells.
Shell-leaf Penstemon
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The prairie and the cave of Wind Cave National Park.  

Did You Know?
Wind Cave became a national park in 1903. It is one of the nation's oldest national parks. Today the park not only protects the 4th longest cave in the world, it protects an amazing prairie ecosystem and the wildlife associated with it.

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Last Updated: July 20, 2007 at 15:47 EST