• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Seed Study - Ambrosia psilostachya

Ambrosia psilostachya - Western Ragweed

Ambrosia psilostachya - Western Ragweed

Species: Ambrosia psilostachya
Common name: western ragweed

Seedling identification: First leaves are tri-lobed and coarsely pubescent. Sharp outward pointing hairs line the leaf margin.


Did You Know?

Sign used at Wind Cave in 1903 when the cave became a national park.

Wind Cave is the first cave in the world to be designated as a national park. That occurred on January 9, 1903.