Links to Saskatchewan wildflower websites:
Flora of Saskatchewan Association.
Native Plant Society of Saskatchewan.
Prairie Wildflowers blog.
Species Lists, Saskatchewan Conservation Data Centre.
Virtual Herbarium of Plants at Risk in Saskatchewan, University of Saskatchewan Fraser Herbarium. This site has good keys for genera containing rare plant species.
Links to other wildflower websites:
E-Flora BC: Electronic Atlas of the Plants of British Columbia ...contains quite a few plants found in Saskatchewan. Very good species descriptions, and has multiple photographs for each plant.
Other links relevant for Saskatchewan wildflowers:
1050 Saskatchewan Wildflowers app ...I own this app and use it from time to time. I find the photographs for plants are very poor, however, its dynamic taxonomic key is excellent. If it suggests a plant, I always need to do a google search to see photos, and still need to use reference books to finalize the ID. However, if you're stuck identifying a plant it can be useful.
George F. Ledingham Herbarium, University of Regina
Integrated Taxonomic Information System