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Cirsium scariosum (Elk Thistle)
Life (root) » Plantae (plants) » Tracheophyta (Vascular Plants) » Angiospermae (Flowering Plants) » Magnoliopsida (Dicots) » Asterales (asters, bellflowers, fanflowers, and allies) » Asteraceae (sunflowers, daisies, asters, and allies) » Carduoideae (Thistles and Allies) » Cardueae » Carduinae (Thistles and Burdocks) » Cirsium (thistles) » Cirsium scariosum (Elk Thistle)

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Elk Thistle
Cirsium scariosum
Location: Lincoln County, WY
Photo Date: 7/15/2011
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Elk Thistle
Cirsium scariosum
Location: Peekaboo Gulch, Chaffee County, CO
Photo Date: 8/6/2003