Mosses are my passion and if you want to learn more about them then I recommend checking out this field guide. It is a fabulous resource and the best book for getting to know mosses in the wild. The book has full-color images that show the plants in both their wet and dry states and has beautiful line drawings that illustrate the key features of the plants. This book was written by two botany professors, one of their daughters who is an artist, and a former undergraduate student. This combination of authors has resulted in an exceptionally accessible book that anyone who wants to learn more about plants can use.