The study of angiospermic plants is based on deep knowledge of all the morphological features of plants. The Ayurvedic science and Science of Naturopathy Medicine is entirely dependent on correct identification of plants. The book is designed to introduce quantitative characteristics of flower that are essential for identification of plant. Flower is a very important characteristics feature of angiospermic plant which plays an important role in correct identification of plant. In this text list of total quantitative characteristics and images of 101 flowers is given. The book is very useful for teachers and students of Botany, Pharmaceutical Science, Naturopathy and Ayurvedic Science of all the colleges and Universities of the World.