The Annals of the Missouri Botanical Garden, published quarterly since 1914, contains peer-reviewed papers primarily devoted to systematic botany and evolution. The Annals reflect the global mission of the Garden, with contributing authors from the Americas, Africa, Europe, Asia, and Australasia.

CONTENTS OF THE ANNALS OF THE MISSOURI BOTANICAL GARDEN, VOL. 91 NUMBER 4

Africa’s Hotspots of Biodiversity Redefined. Wolfgang Kuper, Jan Henning Sommer, Jon C. Lovett, Jens Mutke, Hans Peter Linder, Henk Jaap Beentje, Renaat Sylva Angele Rosine Van Rompaey, Cyrille Chatelain, Marc Sosef and Wilhelm Barthlott

A Revision of the Mascarene Species of Elaphoglossum (Elaphoglossaceae). David H. Lorence and Germinal Rouhan

Comparative Wood Anatomy of the Blueberry Tribe (Vaccinieae, Ericaceae s.l.). Frederic Lens, Kathleen A. Kron, James L. Luteyn, Erik Smets and Steven Jansen

Revision of Dracontium (Araceae). Guanghua Zhu and Thomas B. Croat

Revision of Dieffenbachia (Araceae) of Mexico, Central America, and the West Indies. Thomas B. Croat

Checklist for Authors

Index to Volume 91