University of Minnesota
University of Minnesota
College of Biological Sciences
http://www.cbs.umn.edu/

Prairie Swales

Vernal pool in very early spring
Vernal pool in early May
Verdant swale early summer
Prairie vegetation in high summer
Graminoids ring a small wet swale
Rudbeckia serotina  (Black-eyed Susan) blooming
Prairie vegetation in late summer
Prairie swale
Verdant swale in high summer
Forbs and grasses
Cicuta maculata (Water Hemlock) and Asclepias incarnata  (Swamp Milkweed)