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.

Recent cladistic analyses are revealing the phylogeny of flowering plants in increasing detail, and there is support for the monophyly of many major groups above the family level. Presented in this issue is a classification of 462 flowering plant families in 40 putatively monophyletic orders and a small number of monophyletic, informal higher groups.

CONTENTS OF THE ANNALS OF THE MISSOURI BOTANICAL GARDEN, VOL. 85, NUMBER 4

An Ordinal Classification for the Families of Flowering Plants. The Angiosperm Phylogeny Group

Taxonomy of the Paeonia delavayi Complex (Paeoniaceae). Hong De-yuan, Pan Kai-yu & Yu Hong

A Cladistic Analysis of Species Groups in Weinmannia (Cunoniaceae) Based on Morphology and Inflorescence Architecture. Jason C. Bradford

Taxonomic Revision of Geranium Sections Batrachioidea and Divaricata (Geraniaceae). Carlos Aedo, Juan Jose Aldasoro & Carmen Navarro

Revision y Analisis Cladistico de Steinchisma (Poaceae: Panicoideae: Paniceae). Fernando O. Zuloaga, Osvaldo Morrone, Andrea S. Vega & Liliana M. Giussani

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