• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Wildflowers - White Horehound

White Horehound - Marrubium vulgare
White Horehound - Marrubium vulgare
NPS Photo by Marie Curtin

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...