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. 93, NUMBER (3)

A Taxonomic Revision of Caribbean Adiantopsis (Pteridaceae). Michael S. Barker and R. James Hickey

Support for an Expanded Solms laubachia (Brassicaceae), Evidence from Sequences of Chloroplast and Nuclear Genes. Ji Pei Yue, Hang Sun, Ihsan A. Al Shehbaz and Jian Hua Li

Revision del Genero Acaena (Rosaceae) en Chile. Alicia Marticorena

Scale dependent Classification of Xeric Limestone Prairies, Annual or Perennial Grasslands. Patrick J. Lawless, Jerry M. Baskin and Carol C. Baskin

Pollination Biology in a Tropical High Altitude Grassland in Brazil, Interactions at the Community Level. Leandro Freitas and Marlies Sazima

Embryology, Karyology, and Modes of Reproduction in the North American Genus Boechera (Brassicaceae), A Compilation of Seven Decades of Research. Christoph Dobes, Marcus Koch and Timothy F. Sharbel