The Annals is a quarterly international journal primarily devoted to systematic botany and evolutionary biology. We encourage submissions of original papers dealing with significant advances in the taxonomy, phylogeny, conservation, and evolution of plants using morphological and/or molecular characters. We also welcome reviews and papers on conceptual issues and new methodologies in systematics. Important floristic works can occasionally be considered. Symposia proceedings discussing a broader range of topical biological subjects are also published, typically once a year. All manuscripts are peer-reviewed by qualified and independent reviewers.

CONTENTS OF THE ANNALS OF THE MISSOURI BOTANICAL GARDEN, VOL. 105, NUMBER 4

Neotropical Rubiaceae: Synthesis of Chromosome Data from Costa Rican Taxa, with Insights on the Systematics of the Family
Michael Kiehn and Andreas Berger

Molecular Phylogeny of Axonopus (Poaceae, Panicoideae, Paspaleae): Monophyly, Synapomorphies, and Taxonomic Implications for Infrageneric Classification and Species Complexes
Carolina Delfini, Juan M. Acosta, Vinicius Castro Souza & Fernando O. Zuloaga

Taxonomic Differentiation of Iberian Knapweeds (Centaurea sects. Jacea and Lepteranthus, Asteraceae) and Genetic Isolation of Infraspecific Floral Morphotypes
Itziar Arnelas, Ernesto Pérez-Collazos, Juan A. Devesa, Antonio J. Manzaneda & Pilar Catalan

Insights into the Systematics of Tribe Duranteae (Verbenaceae) II: A Taxonomic Revision of the New World Genus Duranta
Pablo Moroni & Nataly O’Leary

From Geneticist to the Garden to Senior Botanist: Edgar Anderson and the Study of Plants in the 20th Century
Kim Kleinman

• Editor-in-Chief: Peter Hoch