A Great Lakes Wetland Flora (Fourth Edition) is a comprehensive field guide to the vascular plants found in the wetlands of the Upper Midwest - the plants of bogs, fens, swamps, marshes, wet meadows, and low prairie - plus the aquatic plants of lakes, ponds, rivers, and streams. The Fourth Edition features many new illustrations and incorporates the June 2012 Wetland Indicator Status classification of the National Wetland Plant List; this replaces earlier lists developed by the US Fish and Wildlife Service, and is the standard for use in wetland delineation studies. Definitions for the indicators have been revised, and are based on regions, 4 of which are present in the Great Lakes area: Midwest, Northcentral and Northeast, Eastern Mountains and Piedmont, and Great Plains. The Flora's thoroughness and ease-of-use have made it a favorite reference with botanists, natural resource managers, environmental consultants, students and educators. Contents* Complete coverage of aquatic and wetland plants of the Upper Midwest - Minnesota, Wisconsin, Michigan, Iowa, Illinois, Indiana and Ohio. * Over 900 plant species in 114 plant families; each species described (including habitat and range information) and illustrated. * Descriptions of major wetland types of the Great Lakes region.* Identification of plants of conservation concern in each state (endangered, threatened, special concern). * Alphabetically arranged by plant family within four major plant groups - Ferns and Fern Allies, Conifers, Dicots, and Monocots - for quickly finding and identifying plants. * Easy-to-use keys to each plant family, genus, and species.