| Scientific Name | Potamogeton illinoensis Morong |
| Family | Potamogetonaceae |
| Common Names | illinois pondweed |
| Eastern Washington | Native |
| Conservation Status | |
| Notes |
Click on any image to enlarge it.
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
Along Hwy 23 ca. 6.7 mi S of Sprague, WA; N 47.23020 W 117.91049; Whitman Co.; 7/29/2014 
ca. 5.1 air mi N of Othello, WA at the S. end of Herman Lake near boat ramp; N 46.89752 W 119.20034; Adams Co., 9/19/2016 
ca. 5.1 air mi N of Othello, WA at the S. end of Herman Lake near boat ramp; N 46.89752 W 119.20034; Adams Co., 9/19/2016 
ca. 5.1 air mi N of Othello, WA at the S. end of Herman Lake near boat ramp; N 46.89752 W 119.20034; Adams Co., 9/19/2016 
ca. 5.1 air mi N of Othello, WA at the S. end of Herman Lake near boat ramp; N 46.89752 W 119.20034; Adams Co., 9/19/2016 
ca. 5.1 air mi N of Othello, WA at the S. end of Herman Lake near boat ramp; N 46.89752 W 119.20034; Adams Co., 9/19/2016 (peduncle on right, stem on left)
