This compact textbook provides a fundamental understanding of plant classification and offers insights into the diversity of the plant world. It is aimed at undergraduate and graduate students from various fields of study. The author describes plant systematics based on the latest scientific developments. Following a solid introduction to the basics of systematics, taxonomy, nomenclature, and evolutionary research, the reader becomes familiar with individual plant groups and their characteristics. The specialized knowledge conveyed in the text is illustrated with numerous detailed images, contributing to a good understanding of the book and facilitating quick learning success.