Dwarf lake iris (Iris lacustris) – Dwarf lake iris is endemic to the Great Lakes Region. Populations are found particularly along the northern shores of Lake Michigan and Huron. The flowers are violet with a white center and bloom towards the end of May. Where dwarf lake iris occurs it is usually quite common, forming a carpet of color near the water and back into the forest. Dwarf lake iris is now the state wildflower of Michigan.