• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Seed Study - Onopordum acanthium

Onopordum acanthium - Scotch Thistle

Onopordum acanthium - Scotch Thistle

NPS Photo

Species: Onopordum acanthium
Common name:
Scotch thistle

Seedling Identification: Beware of confusing this one (in the seedling stage) with the native thistle Cirsium undulatum. There is no reliable way to differentiate between the species until the plants get some size and age.

 

Did You Know?

Bull elk in the park.

A Rocky Mountain bull elk weighs between 700 - 800 pounds. Rocky Mountain elk were introduced to the park in 1914 and 1916. More...