An interesting resource on line:

“Pacific Northwest Wildflowers contains 16700 wildflower photographs by Mark Turner, available for license as stock photography for editorial or commercial use. The photos were created throughout the Pacific Northwest and in other parts of the United States and Canada. Most are from locations in Washington, Oregon, and northern California. Every plant pictured is identified by Latin and common name. Powerful search tools make it easy to find just the photograph or species you want, whether it’s a native plant or an introduced weed. High resolution digital files are available for reproduction upon agreement to a license and payment. Mark is the photographer and co-author (with Phyllis Gustafson) of the award-winning field guide, Wildflowers of the Pacific Northwest. Mark is a full-time nature and garden photographer and a self-trained botanist.”

The site can be found at https://www.pnwflowers.com/