• 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

Did You Know?

White Penstemon

White Penstemon is the most widespread penstemon or beardtongue in the Great Plains. The insides of the blossoms are bearded and often spotted with purple. More...