Coptis laciniata Gray (1887: 296)

Lectotype (designated here):— UNITED STATES. Oregon: Linn County, Cascade Mountains, April 1878, W. C. Cusick s.n. (lectotype OSC! [sheet no. OSC0000897], isolectotypes OSC! [sheet no. OSC0000898], K! [sheet no. K000694304], GH [sheet no. GH00096747]).

Coptis venosa Howell (1897: 21), syn. nov. Type:— UNITED STATES. Oregon: Douglas County, Cascade Mountains near Oakland, March 1882, Howell s.n. (holotype OSC! [sheet no. OSC0000899]; isotype OSC! [sheet no. OSC0000890]).