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Making America's Best Idea Even Better
Wind Cave National ParkCactus
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Wind Cave National Park
Cacti - Bigroot Pricklypear
 
Bigroot Pricklypear - Opuntia macrorhiza
NPS Photo by Jim Pisarowicz
Bigroot Pricklypear - Opuntia macrorhiza
 
The name macrorhiza means large root.
Shell-leaf Penstemon
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fire on the prairie  

Did You Know?
Fire is an important factor in protecting the prairie. Historically, fires burned across the prairie every 4 to 7 years. Fires burn the small trees that would otherwise march across the prairie and turn the grasslands to forest.

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Last Updated: August 10, 2007 at 18:34 EST