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Project Noah Nature School
Cirsium scariosum
In Yellowstone National Park in Wyoming, this plant is known as everts' thistle. Elsewhere it is called elk thistle. The flower heads grow in a cluster near the top of the plant, surrounded by leaves that extend above them. The stem of this plant can be eaten like celery when the leaves and spines are peeled away.
Yellowstone National Park, Wyoming
Spotted on Jul 26, 2015
Submitted on Jul 27, 2015
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