The Annals of the Missouri Botanical Garden, published quarterly since 1914, contains peer-reviewed papers primarily devoted to systematic botany and evolutionary biology. 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. 102, NUMBER 3

Taxonomic Revision of Geranium sect. Ruberta and Unguiculata (Geraniaceae)
Carlos Aedo

A Synopsis of Briza, Brizochloa, and Chascolytrum (Poaceae, Pooideae, Poeae)
Liliana Essi, Hilda Maria Longhi-Wagner & Tatiana Teixeira de Souza Chies

Systematics of Prestonia (Apocynaceae: Apocynoids: Echiteae) 80 Years after Woodson
J. Francisco Morales, Mary E. Endress & Sigrid Liede-Schumann

Biogeographic Barriers in the Andes: Is the Amotape–Huancabamba Zone A Dispersal Barrier for Dry Forest Plants?
Catalina Quintana, R. Toby Pennington, Carmen Ulloa Ulloa & Henrik Balslev

The World Flora Online, Target 1 of the Global Strategy for Plant Conservation, and the Species Plantarum Programme: Flora of the World: Compatible Concepts or Mutually Exclusive Mandates?
Gideon F. Smith, Ronell R. Klopper, Peter Wyse Jackson & Neil R. Crouch

• Editor-in-Chief: Li-Bing Zhang