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 Australia.

CONTENTS OF THE ANNALS OF THE MISSOURI BOTANICAL GARDEN, VOL. 101, NUMBER 2

Revisión Taxonómica de las Especies Monoicas de Amaranthus (Amaranthaceae): Amaranthus subg. Amaranthus y Amaranthus subg. Albersia
by Néstor D. Bayón

Synopsis of Acalypha (Euphorbiaceae) of Argentina, Paraguay, and Uruguay
by José María Cardiel & Pablo Muñoz Rodríguez

Evolution of Angiosperm Pollen. 3. Monocots
by Yang Luo, Lu Lu, Alexandra H. Wortley, De-Zhu Li, Hong Wang & Stephen Blackmore