The Sphagnum Species of the World. 2019. (Bibliotheca Botanica, 162) 15 figs. 219 pls. 435 p. gr8vo. Hardcover.

Sphagnum specialist Dierk Michaelis documents the worldwide known peat moss species (genus Sphagnum) and presents keys for their identification. It represents the updated, supplemented English language version of the author's original peat moss flora of 2011 (in German), the first overall presentation of Sphagnum since Carl Warnstorf's "Sphagnologia Universalis" of 1911. Compared to the German edition, 12 species have been added, 23 new plates were added, the chapters on phylogeny and research history have been revised and a new chapter on Sphagnum ecology has been added.

Contents (chapter headings): Preface/ Abstract/ Introduction/ Characteristic and key to sections/ Identification keys and regional species lists/ Species descriptions/ Glossarium 399/ References/ List of journals and monograph series/ Illustration credits/ Index.