Chemosystematics: The Twenty-Third Systematics Symposium
Chemosystematics: The Twenty-Third Systematics Symposium: [Introduction], pp. 145-146
John E. Averett
Perspectives in Plant Serotaxonomy, pp. 147-160
David E. Fairbrothers
Electrophoretic Evidence and Plant Systematics, pp. 161-180
L. D. Gottlieb
The Applications of Molecular Evolution to Systematics: Rates, Regulation, and the Role of Natural Selection, pp. 181-183
Mary-Claire King
Chemosystematics-Analyses of Populational Differentiation and Variability of Ancestral and Recent Populations of Juniperus ashei, pp. 184-209
Robert P. Adams
The Order Centrospermae, pp. 210-220
Tom J. Mabry
Defensive Ecology of the Cruciferae, pp. 221-234
Paul Feeny
Chemosystematics and Its Effect Upon the Traditionalist, pp. 235-242
B. L. Turner


Systematics of Moraea (Iridaceae) in Tropical Africa, pp. 243-295
Peter Goldblatt
A New Classification of Ficus, pp. 296-310
William Ramirez B.
Studies in Bignoniaceae 25: New Species and Combinations in South American Bignoniaceae, pp. 311-319
Alwyn H. Gentry
New Records of Apocynaceae for Panama and the Choco, pp. 320-323
Alwyn H. Gentry
New Taxa and Combinations in Eragrostis (Poaceae), pp. 324-329
John T. Witherspoon
Realignment of the Species Placed in Exogonium (Convolvulaceae), pp. 330-339
Daniel F. Austin
The Lupinus montanus Complex of Mexico and Central America, pp. 340-365
David B. Dunn; William E. Harmon
Guayania davidsei and Hebeclinium gentryi, New Species from Northern South America (Eupatorieae-Asteraceae), pp. 366-370
Robert M. King; Harold Robinson

Notes
A New Species of Bauhinia (Leguminosae) from Peru, pp. 371-373
Richard P. Wunderlin
Alnus maritima Muhl. Ex Nutt., Not Alnus metoporina Furlow, pp. 373-374
Virginia M. Stibolt; C. Rose Broome; James L. Reveal
New Taxa and Combinations in the Genus Lasiacis (Gramineae), pp. 374-375
Gerrit Davidse
Solanum armentalis: A New Species from Costa Rica, pp. 376-378
Johnnie L. Gentry, Jr.; Bebb Herbarium; William G. D'Arcy
Herbertia (Iridaceae) Reinstated as a Valid Generic Name, pp. 378-379
Peter Goldblatt