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Tall Thistle (Cirsium altissimum) Growing on a dirt roadside at the edge of a dense mixed forest. These plants grow to extreme heights, ours topping out at around 11 feet (35 dm)! The swallowtail butterflies love nectaring on these flowers!<br /> <br /> Leaves are shallowly lobed with white undersurfaces. C. discolor is similar but has deeply pinnatifid leaves. Cirsium altissimum,Geotagged,Summer,Tall thistle,United States Click/tap to enlarge

Tall Thistle (Cirsium altissimum)

Growing on a dirt roadside at the edge of a dense mixed forest. These plants grow to extreme heights, ours topping out at around 11 feet (35 dm)! The swallowtail butterflies love nectaring on these flowers!

Leaves are shallowly lobed with white undersurfaces. C. discolor is similar but has deeply pinnatifid leaves.

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The Tall thistle

''Cirsium altissimum'' is a North American species of plants in the thistle tribe within the sunflower family. Common name is tall thistle or roadside thistle. The species is native to the eastern and Central United States, with a range extending from Massachusetts west to North Dakota and south to Texas and the Florida Panhandle.

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Similar species: Asterales
Species identified by Flown Kimmerling
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By Flown Kimmerling

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Uploaded Sep 17, 2019. Captured Sep 14, 2019 18:42 in 234 Oakman Rd NE, Ranger, GA 30734, USA.
country flag of United States of America Explore United States of America 39,948 9,641 8
  • Canon EOS 6D Mark II
  • f/20.0
  • 1/128s
  • ISO200
  • 100mm
Captured in the summer. More summer photos.

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