| Scientific Name | Polygonum polygaloides Wallich ex Meisn. ssp. confertiflorum (Nutt. ex Piper) J.C. Hickman |
| Family | Polygonaceae |
| Common Names | close-flowered knotweed |
| Eastern Washington | Native |
| Conservation Status | |
| Notes |
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N of Davenport; along Hi 2 N of Hansen rd.; N 47.74511 W 118.16896- Lincoln Co., WA – 6/29/2009 
N of Davenport; along Hi 2 N of Hansen rd.; N 47.74511 W 118.16896- Lincoln Co., WA – 6/29/2009 
N of Davenport; along Hi 2 N of Hansen rd.; N 47.74511 W 118.16896- Lincoln Co., WA – 6/29/2009 
Along Kallenberger Rd 0.3 mi N of Sprague Hwy Rd E; 9.32 air mi NE of Sprague, WA; N 47.40132 W 117.84458; Lincoln Co.; 6/1/2020 
Along Kallenberger Rd 0.3 mi N of Sprague Hwy Rd E; 9.32 air mi NE of Sprague, WA; N 47.40132 W 117.84458; Lincoln Co.; 6/1/2020 
Along Kallenberger Rd 0.3 mi N of Sprague Hwy Rd E; 9.32 air mi NE of Sprague, WA; N 47.40132 W 117.84458; Lincoln Co.; 6/1/2020 
Along Kallenberger Rd 0.3 mi N of Sprague Hwy Rd E; 9.32 air mi NE of Sprague, WA; N 47.40132 W 117.84458; Lincoln Co.; 6/1/2020 
Along Kallenberger Rd 0.3 mi N of Sprague Hwy Rd E; 9.32 air mi NE of Sprague, WA; N 47.40132 W 117.84458; Lincoln Co.; 6/1/2020
