Vascular Epiphytism: Taxonomic Participation and Adaptive Diversity, pp. 183-204
David H. Benzing
Diversity and Biogeography of Neotropical Vascular Epiphytes, pp. 205-233
Alwyn H. Gentry; C. H. Dodson
Nitrogen Fixation by Epiphylls in a Tropical Rainforest, pp. 234-241
Barbara L. Bentley
Adaptive Radiation of Salamanders in Middle American Cloud Forests, pp. 242-264
David B. Wake
Revision of Eremanthus (Compositae: Vernonieae), pp. 265-290
Nanda F. F. MacLeish
Biosystematics of Tetraploid Eucharis (Amaryllidaceae), pp. 291-309
Alan W. Meerow
The Shrubby Gentian Genus Macrocarpaea in Panama, pp. 310-313
Kenneth J. Sytsma
Monoecy and Sex Changes in Freycinetia (Pandanaceae), pp. 314-320
Hans-Helmut Poppendieck
A Guide to Collecting Lecythidaceae, pp. 321-330
Scott A. Mori; Ghillean T. Prance
Chromosome Cytology of Oldenburgia (Asteraceae-Mutisieae), pp. 331-332
Peter Goldblatt
Notes on Cipura (Iridaceae) in South and Central America, and a New Species from Venezuela, pp. 333-340
Peter Goldblatt; James E. Henrich
Ithomiinae (Lepidoptera: Nymphalidae): Summary of Known Larval Food Plants, pp. 341-358
Boyce A. Drummond III; Keith S. Brown, Jr.
Chemistry at the Solanaceae/Ithomiinae Interface, pp. 359-397
Keith S. Brown, Jr.
New Taxa of Rubiaceae from Venezuela, pp. 398-400
Julian A. Steyermark
Six New Species of Neotropical Lauraceae, pp. 401-412
Henk van der Werff
A New Species of Ocotea (Lauraceae) from Southeastern Mexico, pp. 413-415
Tom Wendt; Henk van der Werff
Four New Species of Axonopus (Poaceae: Paniceae) from Tropical America, pp. 416-423
Gerrit Davidse
Two New Mesoamerican Species of Chusquea (Poaceae: Bambusoideae), pp. 424-427
Lynn G. Clark

Notes
New Combinations in Chusquea (Poaceae: Bambusoideae), p. 428
Lynn G. Clark
Notes on Cornus (Cornaceae) in South America, pp. 429-430
Julian A. Steyermark; Ronald Liesner
A New Combination in Lucilia (Compositae-Inuleae), p. 431
Elsa Zardini
Chromosome Counts of Missouri Asteraceae and Poaceae, pp. 432-433
Ahsan A. Vahidy; Youji Shigenobu
A New Species of Thrasya (Poaceae: Panicoideae) from the Mosquitia of Nicaragua and Honduras, pp. 434-436
Gerrit Davidse; Alasdair G. Burman
A New Species of Bulbostylis (Cyperaceae) from Tropical America, pp. 437-439
Robert Kral; Gerrit Davidse
A New Carex Sect. Oligocarpae (Cyperaceae) from Western Arkansas and Eastern Oklahoma, pp. 440-442
Robert Kral; James Manhart; Charles T. Bryson
Notes on Chromosome Cytology of Rutaceae-Diosmeae, pp. 443-444
Peter Goldblatt; Ion Williams
The Fruits of Decarydendron (Monimiaceae), pp. 445-446
David H. Lorence
Reconsideration of the Generic Placement of Palicourea Domingensis (Rubiaceae: Psychotrieae), pp. 447-448
Charlotte M. Taylor
Clarification of the Taxonomy of Leucaena Salvadorensis Standley Ex Britton & Rose, p. 449
Sergio Zarate
An Unusual New Species of Helmiopsis H. Perrier (Sterculiaceae) From Madagascar, pp. 450-452
Lisa C. Barnett
Witheringia folliculoides (Solanaceae): A New Species From Costa Rica, pp. 453-454
William G. D'Arcy; Johnnie L. Gentry, Jr.
Eschweilera costaricensis (Lecythidaceae): A New Species for the Floras of Costa Rica and Nicaragua, pp. 455-456
Scott A. Mori
A New Variety of Hedyosmum (Chloranthaceae) From Nicaragua, pp. 457-459
Carol A. Todzia

Book Review
----------------, pp. 460-462
The Botany of Mangroves.
P. B. Tomlinson