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 2

Phylogenetic Analyses and Perianth Evolution in Basal Angiosperms. Michael J. Zanis, Pamela S. Soltis, Yin Long Qiu, Elizabeth Zimmer, and Douglas E. Soltis

Molecular Systematics, Evolution, and Population Biology in the Mustard Family (Brassicaceae). Marcus Koch, Ihsan A. Al-Shehbaz, and Klaus Mummenhoff

How Big is the Global Weed Patch? Clinton N. Jenkins and Stuart L. Pimm

Revision of Ardisia subgenus Auriculardisia (Myrsinaceae) Jon M. Ricketson and John J. Pipoly III