Fundamentum Historiae Naturalis Muscorum Frondosorum

Fundamentum Historiae Naturalis Muscorum Frondosorum is a foundational work by botanist Johann Hedwig, published in two volumes between 1782 and 1783. The title translates to "Elements of the Natural History of Leafy Mosses."1

In this publication, Hedwig explored the anatomy, fertilization, and reproduction of mosses. He introduced a novel classification system for mosses based on how their spores, the reproductive bodies, are distributed. Hedwig was a pioneer in the study of mosses, being the first to accurately identify their reproductive organs. His meticulous work, aided by his skill with a microscope, led to the identification of more moss species than any other botanist of his era. The field dedicated to the study of mosses is known as bryology.12