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. 90, NUMBER 4

A Revision of the Imbricate Group of Styrax Series (Styracaceae) in Asia. Yelin Huang, Peter W. Fritsch, and Suhua Shi

Phylogeny of Campanulaceae S. Str. Inferred from ITS Sequences of Nuclear Ribosomal DNA. W. M. M. Eddie, T. Shulkina, J. Gaskin, R. C. Haberle, and R. K. Jansen

Morphological Studies Toward an Improved Classification of Campanulaceae S. Str. Tatyana V. Shulkina, John F. Gaskin, and W. M. M. Eddie

Phylogeny of Saururaceae Based on Morphology and Five Regions from Three Plant Genomes. Shao-Wu Meng, Andrew W. Douglas, De-Zhu Li, Zhi-Duan Chen, Han-Xing Liang, and Jun-Bo Yang

Phylogenetic Position and Generic Limits of Arabidopsis (Brassicaceae) Based on Sequences of Nuclear Ribosomal DNA. Steve L. O’Kane Jr. and Ihsan A. Al-Shehbaz

Evolution of Floral Nectaries in Iridaceae. Paula J. Rudall, John C. Manning, and Peter Goldblatt

Checklist for Authors

Index for Volume 90