Learn to identify ferns in the North Woods Ferns and allies are a surprisingly diverse group with a fascinating natural history. Some ferns are as tiny as golf tees, and others may tower to head height. Horsetail stems contain so much abrasive silica that they can be used to scour pots! Did you know that the spores from certain clubmosses are highly explosive and were used in creating flashes to light photos taken in the 1800s? This interesting addition to the Naturalist Series covers all 86 species of ferns, horsetails, spikemosses, quillworts, and clubmosses found in the North Woods of Minnesota, Wisconsin, Michigan, and Ontario. The innovative format, with fieldmark arrows that point out the best distinguishing characteristics, makes field identification a snap. You'll find more than 300 photos and dozens of color illustrations, including detailed art that clearly illustrates the life history of ferns and their allies, as well as range maps for all species. With its handy field guide size, Ferns & Allies of the North Woods by Joe Walewski conveniently fits in your backpack or back pocket.