• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Wildflowers - Thistle

Thistle - Circium arvense, C. undulatum
Thistle - Circium arvense, C. undulatum
NPS Photo
  • Bibliography Bibliography

    Plants - Research bibliograhy of plant studies done in the park Read More

  • Wildflower Wildflower

    Photo Gallery Read More

Did You Know?

Stemless Hymenoxys

The scientific name for the Stemless Hymenoxys is Hymemoxys acaulis.  Acaulis means "stemless" and referes to the leafless stalks which bear the flower heads. More...