Missouri Plants Johnny-Jump-Up   (Viola rafinesquii) Tracheophyte: Angiosperm: Dicot: Violet (Violaceae) Native North American Plant Habitat: any full sun area. ID Features: tiny blue-petaled flowers. Natural History: Johnny-jump-ups are tiny violets that commonly grow in waste places and old fields. They are related to common violets, but have smaller flowers.
The information is from: Missouri Wildflowers by Edgar Denison, 5th Edition, Missouri Department of Conservation, ©1998.