| Scientific Name | Erigeron filifolius (Hook.) Nutt. |
| Family | Asteraceae |
| Common Names | threadleaf fleabane, Peck’s threadleaf fleabane |
| Eastern Washington | Native |
| Conservation Status | |
| Notes |
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Hills above Yakima River, SW of Prosser along Gap Rd; Hills above Yakima River, SW of Prosser along Gap Rd – Yakima Co. – 5/19/2011 
Hills above Yakima River, SW of Prosser along Gap Rd; Hills above Yakima River, SW of Prosser along Gap Rd – Yakima Co. – 5/19/2011 
Hills above Yakima River, SW of Prosser along Gap Rd; Hills above Yakima River, SW of Prosser along Gap Rd – Yakima Co. – 5/19/2011 
Hills above Yakima River, SW of Prosser along Gap Rd; Hills above Yakima River, SW of Prosser along Gap Rd – Yakima Co. – 5/19/2011 
Hills above Yakima River, SW of Prosser along Gap Rd; Hills above Yakima River, SW of Prosser along Gap Rd – Yakima Co. – 5/19/2011 
Hills above Yakima River, SW of Prosser along Gap Rd; Hills above Yakima River, SW of Prosser along Gap Rd – Yakima Co. – 5/19/2011 
Hills above Yakima River, SW of Prosser along Gap Rd; Hills above Yakima River, SW of Prosser along Gap Rd – Yakima Co. – 5/19/2011 
Hills above Yakima River, SW of Prosser along Gap Rd; Hills above Yakima River, SW of Prosser along Gap Rd – Yakima Co. – 5/19/2011 
Between Hwy 14 and river ca. 3.7 air mi NW of the mouth of Rock Creek; N 45.73524 W 120.53448; Klickitat Co.,WA; 5/4/2014 
Between Hwy 14 and river ca. 3.7 air mi NW of the mouth of Rock Creek; N 45.73524 W 120.53448; Klickitat Co.,WA; 5/4/2014 
Between Hwy 14 and river ca. 3.7 air mi NW of the mouth of Rock Creek; N 45.73524 W 120.53448; Klickitat Co.,WA; 5/4/2014 
Between Hwy 14 and river ca. 3.7 air mi NW of the mouth of Rock Creek; N 45.73524 W 120.53448; Klickitat Co.,WA; 5/4/2014 
Between Hwy 14 and river ca. 3.7 air mi NW of the mouth of Rock Creek; N 45.73524 W 120.53448; Klickitat Co.,WA; 5/4/2014
