• 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.

 

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