...done by Karl Urban at Umatilla National Forest in Oregon. They are meant to be used as coloring book pages for Celebrating Wildflowers and other educational activities. Karl put the drawings into the public domain...
This is a completely free image KU viola glabella that you can download, post, and use for any purpose.
Image License: CC0 No Rights Reserved
You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission, and at no cost. This image is completely free.