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Cirsium muticum (swamp thistle)
Life (root) » Plantae (plants) » Tracheophyta (Vascular 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 muticum (swamp thistle)