33.2 MB (1.8 MB compressed)
4018 x 2888 pixels
34.0 x 24.4 cm ⏐ 13.4 x 9.6 in (300dpi)
'NATURE'S IMAGES, INC.' / SCIENCE PHOTO LIBRARY 'NATURE'S IMAGES, INC.' / SCIENCE PHOTO LIBRARY
Tall Thistle, Cirsium altissimum, although quite variable in appearance, can be distinguished from other similar thistles by its leaves that are shiny-green above and wooly-white below. The much branched stem is also loosely wooly. As its name implies, this is a tall plant and can grow up to 8 feet tall. It is widely distributed over much of the eastern and central US, plus adjoining Canada and Mexico. Photo taken Dallas, Co., TX.
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