• 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?

A picture of Alvin McDonald in his caving hat.

Alvin McDonald was the first systematic explorer of Wind Cave. He explored the cave from 1890 until his death in 1893. More...