The Minnesota Native Plant Society is a "non-profit organization dedicated to the conservation and appreciation of Minnesota’s native plants and plant communities through education and public awareness." Visit their website for more information.
The pink and white Lady's Slipper, Cypripedium reginae, has been the state flower of Minnesota since 1902. The flowers are very large and the stems can grow up to 3 feet tall. This flower used to range across the northeastern United States but due to a multitude of reasons its chance to parade its beauty has been reduced.
Trees of Minnesota Field Guide by 
Wetland Plants of Minnesota by 
A Painted Herbarium by 
Collector and illustrator, Emily Hitchcock Terry (1938-1921), lived in Minnesota from 1872-84. She spent her time both collecting and illustrating living plants from Minnesota. She was the first known person to have illustrated living plants from this area. Please see a review of an exhibition of her work below.
An Indigo Bunting shows us his blue suit at the oldest public wildflower garden in the United States. The Eloise Butler Wildflower Garden and Bird Sanctuary located in Minneapolis was founded in 1907 by concerned botanists interested in preserving the native flora as the city developed. It has 15 acres of three types of ecosystems with a trail and 49 interpretive stations to educate the public on the different species they may see on their walk.