• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Seed Study - Marrubium vulgare

Marrubium vulgare - White Horehound

Marrubium vulgare - White Horehound

NPS Photo

Species: Marrubium vulgare
Common name:
white horehound

Seedling Identification: Cotyledons are rounded and pubescent. True leaves wrinkled, distinctly veined and covered with whitish pubescence.


Did You Know?

Natural Entrance of Wind Cave

Winds caused by changes in barometric pressure are what give Wind Cave its name. These winds have been measured at the cave's walk-in entrance at over 70 mph. The winds at the natural entrance of the cave attracted the attention of Native Americans and early settlers.