• 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?

Littleleaf Pussytoes

Littleleaf pussytoes can vary in color by elevation. Generally at higher elevations the plant has deeply pink bracts. At lower elevations they are more commonly white. More...