| Scientific Name | Lepidium perfoliatum L. |
| Family | Brassicaceae |
| Common Names | perfoliate peppergrass, clasping peppergrass, pepperwort, etc. |
| Eastern Washington | Introduced |
| Conservation Status | |
| Notes |
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Steptoe Canyon Rd., 3.0 mi. NE of Wawawai River Rd. (Snake River Canyon) – N46.48053, W117.18165 – Whitman Co., WA – 4/16/2009 Steptoe Canyon Rd., 3.0 mi. NE of Wawawai River Rd. (Snake River Canyon) – N46.48053, W117.18165 – Whitman Co., WA – 4/16/2009 Steptoe Canyon Rd., 3.0 mi. NE of Wawawai River Rd. (Snake River Canyon) – N46.48053, W117.18165 – Whitman Co., WA – 4/16/2009 Steptoe Canyon Rd., 3.0 mi. NE of Wawawai River Rd. (Snake River Canyon) – N46.48053, W117.18165 – Whitman Co., WA – 4/16/2009 E 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 E 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 E 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 E 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 E 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
