[Goldthreads: The Genus Coptis in the Cascade Mountains of Oregon and Washington]

This photo shows the distinctive seed head of Oregon goldthread as seen in forest along the Wolf Creek Falls Trail in the Umpqua National Forest......................June 26, 2005.

This photo shows Oregon goldthread as seen in forest along the Wolf Creek Falls Trail in the Umpqua National Forest......................June 26, 2005.

Foliage of Oregon goldthread as seen along the Toutle Trail #238 and Loowit Trail #216 south of the South Fork Toutle River, Mount Saint Helens National Volcanic Monument...........October 19, 2014.

Foliage of Oregon goldthreads as seen near Kalama Falls on WDFW lands north of Merrill Lake, Clark County, WA.......December 5, 2017.

The photo at right shows a basal leaf of Oregon goldthread as seen along the Lewis River Trail #31 between Curly Creek Falls and Bolt Camp Shelter, Gifford Pinchot National Forest..........May 3, 2015. The photo at left shows Oregon goldthread as seen along the Toutle Trail uphill about one-half mile east of McBride Lake, Mt. St. Helens National Monument..........September 13, 2015.

Oregon goldthreads observed along the Pacific Crest Trail #2000 uphill to the southwest of Rock Creek Pass, Yacolt Burn State Forest......August 7, 2021.