When looking through the 607 "Sunflower" images at Acclaim Images.com this Arrowhead Balsam Root Flower was a favorite.
All of their pictures are hand picked, availiable in a number of formats, and you can even get custom prints and posters.

Description:
Arrowhead Balsam Root Flower
Arrowleaf Balsam Root flowers close up. Native Americans used this wildflower for food, tea, medicine amoung other things.

Some related terms for more images:
wildflowers,  horizontal,  spring,  balsam root,  cary ulrich,  balsamorhiza sagittata,  yellow,  sunflower,  stems,  arrow leaf,