[Wildflowers of the Sunflower Family with Button-like Flower Heads]

Bur Ragweed, Annual Bursage, Annual Burweed

Ambrosia acanthicarpa

The photo above shows the inflorescence and a stem leaf of bur ragweed as seen along Washington Highway 14 at milepost 91 above the Avery Sand Pit......................October 7, 2006.

The photo above shows a close-up of the pinnatifid stem leaf of bur ragweed as seen along Washington Highway 14 at milepost 91 above the Avery Sand Pit......................October 7, 2006.

Paul Slichter