VOL. 21
20 October 1997

TABLE OF CONTENTS

Revision of Pterandra (Malpighiaceae), by Christiane Anderson
p. 1

Excentradenia, a new genus of Malpighiaceae from South America, by William R. Anderson
p. 29

Notes on neotropical Malpighiaceae–VI, by William R. Anderson
p. 37

The summit flora of Mt. Murud, Sarawak, Malaysia, by John H. Beaman & Christiane Anderson
p. 85

Aristolochia davilae (Aristolochiaceae), a new species from Nayarit, Mexico, by Ismael Calzada J., Gabriel Flores F. & Oswaldo Téllez V.
p. 143

Miscellaneous notes on Sphagnum—10, by Howard Crum
p. 147

Catalog of the Acanthaceae of Belize with taxonomic and
phytogeographic notes, by Thomas F. Daniel
p. 161

A revision and redefinition of Pseudabutilon (Malvaceae), by Paul A Fryxell
p. 175

New species and new records for the Malvaceae of Baja California, by Paul A Fryxell, José Luis León de la Luz & Miguel Domínguez L.
p. 197

Revision and phylogenetic study of Anomodon and Herpetineuron (Anomodontaceae, Musci), by Íñigi Granzow-de la Cerda
p. 205

Species delimitation, and new taxa and combinations in Leucaena (Leguminosae), by Colin Hughes
p. 277

Two new species of Carex (Cyperaceae) from Mexico, by A. A. Reznicek & M. S. González-Elizondo
p. 291

Carex molestiformis (Cyperaceae), a new species of section Ovales from the Ozark Mountain region, by A. A. Reznicek & Paul E. Rothrock
p. 299

Nomenclatural changes in Mexican Dioscoreaceae and Leguminosae, by Oswaldo Téllez V.
p. 309

A new species of Appendicula (Orchidaceae) from Mt. Murud,
Sarawak, Borneo, by Jeffrey J. Wood
p. 315

Taxonomic and nomenclatural notes on the Delesseriaceae, by Michael J. Wynne
p. 319