• 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?

fire on the prairie

Fire is an important factor in protecting the prairie.  Historically, fires burned across the prairie every 4 to 7 years.  Fires burn the small trees that would otherwise march across the prairie and turn the grasslands to forest.