In this issue:

Am. J. Bot. 2003 90: 0. [Full Text]  

Bryology and Lichenology:

DorothyBelle Poli, Mark Jacobs, and Todd J. Cooke

Auxin regulation of axial growth in bryophyte sporophytes: its potential significance for the evolution of early land plants
Am. J. Bot. 2003 90: 1405-1415. [Abstract] [Full Text]  

Ecology:

Petr Pysek, John H. Brock, Katerina Bímová, Bohumil Mandák, Vojtech Jarosík, Irena Koukolíková, Jan Pergl, and Jan Stepánek

Vegetative regeneration in invasive Reynoutria (Polygonaceae) taxa: the determinant of invasibility at the genotype level
Am. J. Bot. 2003 90: 1487-1495. [Abstract] [Full Text]  

James K. McCarron and Alan K. Knapp

C₃ shrub expansion in a C₄ grassland: positive post-fire responses in resources and shoot growth
Am. J. Bot. 2003 90: 1496-1501. [Abstract] [Full Text]  

Katherine A. Preston and David D. Ackerly

Hydraulic architecture and the evolution of shoot allometry in contrasting climates
Am. J. Bot. 2003 90: 1502-1512. [Abstract] [Full Text] [Data Supplement]  

Physiology and Biochemistry:

Hester L. Bell and James W. O'Leary

Effects of salinity on growth and cation accumulation of Sporobolus virginicus (Poaceae)
Am. J. Bot. 2003 90: 1416-1424. [Abstract] [Full Text]  

Population Biology:

Wen-Luan Wu, Barbara A. Schaal, Chung-Yu Hwang, Ming-Der Hwang, Yu-Chung Chiang, and Tzen-Yuh Chiang

Characterization and adaptive evolution of -tubulin genes in the Miscanthus sinensis complex (Poaceae)
Am. J. Bot. 2003 90: 1513-1521. [Abstract] [Full Text] [Data Supplement]  

Janis Antonovics, Michael E. Hood, Peter H. Thrall, Joseph Y. Abrams, and G. Michael Duthie

Herbarium studies on the distribution of anther-smut fungus (Microbotryum violaceum) and Silene species (Caryophyllaceae) in the eastern United States
Am. J. Bot. 2003 90: 1522-1531. [Abstract] [Full Text]  

Reproductive Biology:

James H. Cane and Daniel Schiffhauer

Dose-response relationships between pollination and fruiting refine pollinator comparisons for cranberry (Vaccinium macrocarpon [Ericaceae])
Am. J. Bot. 2003 90: 1425-1432. [Abstract] [Full Text]  

Systematics:

Cornelia Klak, Angeline Khunou, Gail Reeves, and Terry Hedderson

A phylogenetic hypothesis for the Aizoaceae (Caryophyllales) based on four plastid DNA regions
Am. J. Bot. 2003 90: 1433-1445. [Abstract] [Full Text] [Data Supplement]  

Max Coleman, Aaron Liston, Joachim W. Kadereit, and Richard J. Abbott

Repeat intercontinental dispersal and Pleistocene speciation in disjunct Mediterranean and desert Senecio (Asteraceae)
Am. J. Bot. 2003 90: 1446-1454. [Abstract] [Full Text] [Data Supplement]  

Annika Vinnersten and Gail Reeves

Phylogenetic relationships within Colchicaceae
Am. J. Bot. 2003 90: 1455-1462. [Abstract] [Full Text] [Data Supplement]  

Cynthia M. Morton, Matthew Grant, and Stephen Blackmore

Phylogenetic relationships of the Aurantioideae inferred from chloroplast DNA sequence data
Am. J. Bot. 2003 90: 1463-1469. [Abstract] [Full Text] [Data Supplement]  

Janet L. Jorgensen, Ivana Stehlik, Christian Brochmann, and Elena Conti

Implications of ITS sequences and RAPD markers for the taxonomy and biogeography of the Oxytropis campestris and O. arctica (Fabaceae) complexes in Alaska
Am. J. Bot. 2003 90: 1470-1480. [Abstract] [Full Text]  

Darren R. Sandquist and James R. Ehleringer

Population- and family-level variation of brittlebush (Encelia farinosa, Asteraceae) pubescence: its relation to drought and implications for selection in variable environments
Am. J. Bot. 2003 90: 1481-1486. [Abstract] [Full Text]  

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