Cottonthistle, Cotton Thistle, Scotch Cottonthistle, Scotch Thistle, Scots Thistle
Onopordum acanthium
Synonym: Onopordum acanthium ssp. acanthium
Scotch thistle as seen along the western bank of the Deschutes River about one-half mile upstream from its mouth..........July 27, 2011.
Scotch thistle as seen along the western bank of the Deschutes River about one-half mile upstream from its mouth..........July 27, 2011.
Scotch thistle as seen along the east bank rail trail along the Deschutes River about one and a half miles south of the Columbia River, Deschutes River State Recreation Area.........November 12, 2017.
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The photo above shows scotch thistle as seen within the first mile of the Hat Point Road outside Imnaha, OR..........June 26, 2007. Note the winged, spiny margins of the stems.
Basal leaves of scotch thistle as seen on weed infested slopes along a fisherman's trail on the east bank of the Deschutes River in the Deschutes River State Recreation Area about three-quarters of a mile upstream from its mouth............May 12, 2012.
Paul Slichter