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Wind Cave National Park
Wildflowers - Threenerve Fleabane
 
Threenerve Fleabane - Erigeron subtrinervis
NPS Photo by Mike Laycock
Threenerve Fleabane - Erigeron subtrinervis
 
Threenerve Fleabane is the most common fleabane in the Black Hills.
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.

Last Updated: September 14, 2007 at 10:21 EST