In this issue:

Am. J. Bot. 2003 90: 0. [Full Text]  

Anatomy and Morphology:

S. Jayasankar, Bhaskar R. Bondada, Zhijian Li, and D. J. Gray

Comparative anatomy and morphology of Vitis vinifera (Vitaceae) somatic embryos from solid- and liquid-culture-derived proembryogenic masses
Am. J. Bot. 2003 90: 973-979. [Abstract] [Full Text]  

Book Review:

Daniel J. Crawford

Everything known about tarweeds and silverswords, plus much, much more
Am. J. Bot. 2003 90: 1104-1106. [Full Text]  

Ecology:

Abigail Frost, Juan Carlos López-Gutiérrez, and Colin B. Purrington

Fitness of Cuscuta salina (Convolvulaceae) parasitizing Beta vulgaris (Chenopodiaceae) grown under different salinity regimes
Am. J. Bot. 2003 90: 1032-1037. [Abstract] [Full Text] [Supplemental Data]  

Denise M. Seliskar

The response of Ammophila breviligulata and Spartina patens (Poaceae) to grazing by feral horses on a dynamic mid-Atlantic barrier island
Am. J. Bot. 2003 90: 1038-1044. [Abstract] [Full Text]  

Lesley A. DeFalco, David R. Bryla, Vickie Smith-Longozo, and Robert S. Nowak

Are Mojave Desert annual species equal? Resource acquisition and allocation for the invasive grass Bromus madritensis subsp. rubens (Poaceae) and two native species
Am. J. Bot. 2003 90: 1045-1053. [Abstract] [Full Text]  

Genetics and Molecular Biology:

J. Guillermo Seijo and Aveliano Fernández

Karyotype analysis and chromosome evolution in South American species of Lathyrus (Leguminosae)
Am. J. Bot. 2003 90: 980-987. [Abstract] [Full Text] [Supplemental Data]  

Kamila Skalická, K. Yoong Lim, Roman Matyásek, Blazena Koukalová, Andrew R. Leitch, and Ales Kovarík

Rapid evolution of parental rDNA in a synthetic tobacco allotetraploid line
Am. J. Bot. 2003 90: 988-996. [Abstract] [Full Text]  

Population Biology:

David J. Coates, Stephen Carstairs, and Vicki L. Hamley

Evolutionary patterns and genetic structure in localized and widespread species in the Stylidium caricifolium complex (Stylidiaceae)
Am. J. Bot. 2003 90: 997-1008. [Abstract] [Full Text]  

Bruce Anderson, Jeremy J. Midgley, and Barbara A. Stewart

Facilitated selfing offers reproductive assurance: a mutualism between a hemipteran and carnivorous plant
Am. J. Bot. 2003 90: 1009-1015. [Abstract] [Full Text]  

Francisco Molina-Freaner and Luis E. Eguiarte

The pollination biology of two paniculate agaves (Agavaceae) from northwestern Mexico: contrasting roles of bats as pollinators
Am. J. Bot. 2003 90: 1016-1024. [Abstract] [Full Text]  

Shinya Numata, Masatoshi Yasuda, Toshinori Okuda, Naoki Kachi, and Nur Supandi Md. Noor

Temporal and spatial patterns of mass flowerings on the Malay Peninsula
Am. J. Bot. 2003 90: 1025-1031. [Abstract] [Full Text]  

Structure and Development:

P. Barry Tomlinson

Development of gelatinous (reaction) fibers in stems of Gnetum gnemon (Gnetales)
Am. J. Bot. 2003 90: 965-972. [Abstract] [Full Text]  

Systematics:

David A. Simpson, Carol A. Furness, Trevor R. Hodkinson, A. Muthama Muasya, and Mark W. Chase

Phylogenetic relationships in Cyperaceae subfamily Mapanioideae inferred from pollen and plastid DNA sequence data
Am. J. Bot. 2003 90: 1071-1086. [Abstract] [Full Text] [Supplemental Data]  

John F. Bain and Joanne L. Golden

Phylogeographic relationships within Packera sanguisorboides (Asteraceae), a narrow endemic species that straddles a major biogeographic boundary
Am. J. Bot. 2003 90: 1087-1094. [Abstract] [Full Text]  

Ester Gaya, François Lutzoni, Stefan Zoller, and Pere Navarro-Rosinés

Phylogenetic study of Fulgensia and allied Caloplaca and Xanthoria species (Teloschistaceae, lichen-forming ascomycota)
Am. J. Bot. 2003 90: 1095-1103. [Abstract] [Full Text] [Supplemental Data]  

Tropical Biology:

Jorge A. Lobo, Mauricio Quesada, Kathryn E. Stoner, Eric J. Fuchs, Yvonne Herrerías-Diego, Julissa Rojas, and Guido Saborío

Factors affecting phenological patterns of bombacaceous trees in seasonal forests in Costa Rica and Mexico
Am. J. Bot. 2003 90: 1054-1063. [Abstract] [Full Text]  

Lucas B. Fortini, Stephen S. Mulkey, Daniel J. Zarin, Steel S. Vasconcelos, and Claudio J. R. de Carvalho

Drought constraints on leaf gas exchange by Miconia ciliata (Melastomataceae) in the understory of an eastern Amazonian regrowth forest stand
Am. J. Bot. 2003 90: 1064-1070. [Abstract] [Full Text]  

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