| Scientific Name | Iris pseudacorus L. |
| Family | Iridaceae |
| Common Names | yellow iris, pale yellow iris |
| Eastern Washington | Eurasia |
| Synonyms | |
| Conservation Status | None |
| Notes | Washington – Class A noxious weed |
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S edge of S Twin Lake, W of Inchelium – Ferry Co., WA – 5/29/2006 
S edge of S Twin Lake, W of Inchelium – Ferry Co., WA – 5/29/2006 
100 yds W of jct of Eloika Lk & Brand rds; 48 00 153N 117 21 246W – Spokane Co., WA – 6/5/2009 
100 yds W of jct of Eloika Lk & Brand rds; 48 00 153N 117 21 246W – Spokane Co., WA – 6/5/2009 
100 yds W of jct of Eloika Lk & Brand rds; 48 00 153N 117 21 246W – Spokane Co., WA – 6/5/2009 
Along Hwy 22 SE of Toppenish, WA 0.1 mi SE of Plank Rd; 46.30840N 120.20711W – Yakima Co. – 5/30/2010 
1.23 mi S of Ellensburg, WA (I90) along E side of old Canyon Rd.; N 46.95733 W 120.52950; Kittitas Co.: 5/24/2013