Lepidium perfoliatum March 5, 2020December 24, 2019 by rcarr Scientific NameLepidium perfoliatum L.FamilyBrassicaceaeCommon Namesperfoliate peppergrass, clasping peppergrass, pepperwort, etc.Eastern WashingtonIntroducedConservation StatusNotes Click on any image to enlarge it. Steptoe Canyon Rd., 3.0 mi. NE of Wawawai River Rd. (Snake River Canyon) – N46.48053, W117.18165 – Whitman Co., WA – 4/16/2009Steptoe Canyon Rd., 3.0 mi. NE of Wawawai River Rd. (Snake River Canyon) – N46.48053, W117.18165 – Whitman Co., WA – 4/16/2009Steptoe Canyon Rd., 3.0 mi. NE of Wawawai River Rd. (Snake River Canyon) – N46.48053, W117.18165 – Whitman Co., WA – 4/16/2009Steptoe Canyon Rd., 3.0 mi. NE of Wawawai River Rd. (Snake River Canyon) – N46.48053, W117.18165 – Whitman Co., WA – 4/16/2009E of the parking lot at the end of Herman Rd between Dalton Lake and the Snake R.; N 45.71953 W 120.46160; Franklin Co.., WA; 4/21/2012E of the parking lot at the end of Herman Rd between Dalton Lake and the Snake R.; N 45.71953 W 120.46160; Franklin Co.., WA; 4/21/2012E of the parking lot at the end of Herman Rd between Dalton Lake and the Snake R.; N 45.71953 W 120.46160; Franklin Co.., WA; 4/21/2012E of the parking lot at the end of Herman Rd between Dalton Lake and the Snake R.; N 45.71953 W 120.46160; Franklin Co.., WA; 4/21/2012E of the parking lot at the end of Herman Rd between Dalton Lake and the Snake R.; N 45.71953 W 120.46160; Franklin Co.., WA; 4/21/2012