| Scientific Name | Ambrosia acanthicarpa Hook. |
| Family | Asteraceae |
| Common Names | bur ragweed, annual bursage, flat spine bur-ragweed |
| Eastern Washington | Native |
| Conservation Status | |
| Notes |
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Ca. 14 miles W of Roosevelt along Hwy 14. – Klickitat Co., WA – 9/27/2009 
Ca. 14 miles W of Roosevelt along Hwy 14. – Klickitat Co., WA – 9/27/2009 
Ca. 14 miles W of Roosevelt along Hwy 14. – Klickitat Co., WA – 9/27/2009 
Ca. 14 miles W of Roosevelt along Hwy 14. – Klickitat Co., WA – 9/27/2009 Ca. 14 miles W of Roosevelt along Hwy 14. – Klickitat Co., WA – 9/27/2009 
Along Sand Dunes Rd. ca. 1.75 mi. S of S. Frontage Rd. E.; S of w. edge of Moses Lake, WA; N 47.07964 W 119.33407; Grant Co.; 8/17/2012 
Along Sand Dunes Rd. ca. 1.75 mi. S of S. Frontage Rd. E.; S of w. edge of Moses Lake, WA; N 47.07964 W 119.33407; Grant Co.; 8/17/2012 Along Sand Dunes Rd. ca. 1.75 mi. S of S. Frontage Rd. E.; S of w. edge of Moses Lake, WA; N 47.07964 W 119.33407; Grant Co.; 8/17/2012 
Along Sand Dunes Rd. ca. 1.75 mi. S of S. Frontage Rd. E.; S of w. edge of Moses Lake, WA; N 47.07964 W 119.33407; Grant Co.; 8/17/2012 
Along Sand Dunes Rd. ca. 1.75 mi. S of S. Frontage Rd. E.; S of w. edge of Moses Lake, WA; N 47.07964 W 119.33407; Grant Co.; 8/17/2012 
Along SaAlong Whelan Rd in Whelan Cemetary; 4.57 air mi NE of Pullman, WA; N 46.77895 W 117.11771; Whitman Co.; 8/23/2020nd Dunes Rd. ca. 1.75 mi. S of S. Frontage Rd. E.; S of w. edge of Moses Lake, WA; N 47.07964 W 119.33407; Grant Co.; 8/17/2012 
Along Sand Dunes Rd. ca. 1.75 mi. S of S. Frontage Rd. E.; S of w. edge of Moses Lake, WA; N 47.07964 W 119.33407; Grant Co.; 8/17/2012 
2.65 air mi SSE of Asotin, WA along Snake River Road; N 46.30838 W 117.01514; Asotin Co.; 8/23/2020 
2.65 air mi SSE of Asotin, WA along Snake River Road; N 46.30838 W 117.01514; Asotin Co.; 8/23/2020 
2.65 air mi SSE of Asotin, WA along Snake River Road; N 46.30838 W 117.01514; Asotin Co.; 8/23/2020 
2.65 air mi SSE of Asotin, WA along Snake River Road; N 46.30838 W 117.01514; Asotin Co.; 8/23/2020 
2.65 air mi SSE of Asotin, WA along Snake River Road; N 46.30838 W 117.01514; Asotin Co.; 8/23/2020 
2.65 air mi SSE of Asotin, WA along Snake River Road; N 46.30838 W 117.01514; Asotin Co.; 8/23/2020 
2.65 air mi SSE of Asotin, WA along Snake River Road; N 46.30838 W 117.01514; Asotin Co.; 8/23/2020 
2.65 air mi SSE of Asotin, WA along Snake River Road; N 46.30838 W 117.01514; Asotin Co.; 8/23/2020 
2.65 air mi SSE of Asotin, WA along Snake River Road; N 46.30838 W 117.01514; Asotin Co.; 8/23/2020
