| Binomial Name | Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl |
| Family | Poaceae |
| Common Names | Tall oatgrass |
| Eastern Washington | European introduction |
| Conservation Status | |
| Notes |
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Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019. 
Along Hwy 142, 3.8 air mi ENE of Wahkiacus, WA; N 45.84085 W 121.02232; Klickitat Co.; 5/31/2019.
