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Wind Cave National ParkWildflowers
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Wind Cave National Park
Wildflowers - Pale Evening Primrose
 
Pale Evening Primrose - Oenothera albicaulis
NPS Photo by Jim Pisarowicz
Pale Evening Primrose - Oenothera albicaulis
 
Evening-Primrose's typically open in the evening when their nectaries attract night flying insects.  The flowers may only last a day or so.
Shell-leaf Penstemon
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Blue Flax  

Did You Know?
Blue Flax is often considered a subspecies of the Eurasian L. perenne which is very similar. The plant is named after Meriwether Lewis.
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Last Updated: June 02, 2007 at 14:01 EST