Plant fungi are a fascinating and diverse group within the fungi kingdom. When garden pumpkin plants are covered in a snow-white coating or the pear tree prematurely drops its leaves with noticeably large round leaf spots, we are dealing with plant fungi. In Germany alone, several thousand species are known. Almost every plant species can host at least one type of plant fungus, and in some cases, even several. The fungus lives as a parasite on the living organs of the host plant and feeds on it. This identification book, supported by brilliant images, presents about 500 of the most important and striking plant fungus species found in Germany and provides additional information on the biology and ecology of these species. An outstanding work for mushroom and plant enthusiasts, gardeners, farmers, foresters, and biologists.