In this issue:

Am. J. Bot. 2003 90: 0. [Full Text]  

Invited Special Paper:

Johan Gielis

A generic geometric transformation that unifies a wide range of natural and abstract shapes
Am. J. Bot. 2003 90: 333-338. [Abstract] [Full Text]  

Ecology:

Stephen P. Bonser and Lonnie W. Aarssen

Allometry and development in herbaceous plants: functional responses of meristem allocation to light and nutrient availability
Am. J. Bot. 2003 90: 404-412. [Abstract] [Full Text]  

Anna A. Sher and Diane L. Marshall

Seedling competition between native Populus deltoides (Salicaceae) and exotic Tamarix ramosissima (Tamaricaceae) across water regimes and substrate types
Am. J. Bot. 2003 90: 413-422. [Abstract] [Full Text]  

Jana L. Heisler, John M. Briggs, and Alan K. Knapp

Long-term patterns of shrub expansion in a C₄-dominated grassland: fire frequency and the dynamics of shrub cover and abundance
Am. J. Bot. 2003 90: 423-428. [Abstract] [Full Text]  

Genetics and Molecular Biology:

Kyoko Yamane, Yasuo Yasui, and Ohmi Ohnishi

Intraspecific cpDNA variations of diploid and tetraploid perennial buckwheat, Fagopyrum cymosum (Polygonaceae)
Am. J. Bot. 2003 90: 339-346. [Abstract] [Full Text]  

Physiology and Development:

Adrienne B. Nicotra, Robin L. Chazdon, and Rebecca A. Montgomery

Sexes show contrasting patterns of leaf and crown carbon gain in a dioecious rainforest shrub
Am. J. Bot. 2003 90: 347-355. [Abstract] [Full Text]  

Population Biology:

Maria Angeles Jover, Lucas del Castillo-Agudo, Manuel Garcia-Carrascosa, and Juan Segura

Random amplified polymorphic DNA assessment of diversity in western Mediterranean populations of the seagrass Posidonia oceanica
Am. J. Bot. 2003 90: 364-369. [Abstract] [Full Text]  

Reproductive Biology:

Takashi Miyake and Masako Yafuso

Floral scents affect reproductive success in fly-pollinated Alocasia odora (Araceae)
Am. J. Bot. 2003 90: 370-376. [Abstract] [Full Text]  

Arturo Silva-Montellano and Luis E. Eguiarte

Geographic patterns in the reproductive ecology of Agave lechuguilla (Agavaceae) in the Chihuahuan desert. I. Floral characteristics, visitors, and fecundity
Am. J. Bot. 2003 90: 377-387. [Abstract] [Full Text]  

Structure and Development:

Christopher J. Hogan, Jr and Karl J. Niklas

On the economy and safety of hollow non-septate peduncles
Am. J. Bot. 2003 90: 356-363. [Abstract] [Full Text]  

Systematics:

Mathieu Perret, Alain Chautems, Rodolphe Spichiger, Geoffrey Kite, and Vincent Savolainen

Systematics and evolution of tribe Sinningieae (Gesneriaceae): evidence from phylogenetic analyses of six plastid DNA regions and nuclear ncpGS
Am. J. Bot. 2003 90: 445-460. [Abstract] [Full Text] [Supplemental Data]  

Douglas E. Soltis, Anne E. Senters, Michael J. Zanis, Sangtae Kim, James D. Thompson, Pamela S. Soltis, Louis P. Ronse De Craene, Peter K. Endress, and James S. Farris

Gunnerales are sister to other core eudicots: implications for the evolution of pentamery
Am. J. Bot. 2003 90: 461-470. [Abstract] [Full Text] [Supplemental Data]  

Alexandra N. Muellner, Rosabelle Samuel, Sheila A. Johnson, Martin Cheek, Terence D. Pennington, and Mark W. Chase

Molecular phylogenetics of Meliaceae (Sapindales) based on nuclear and plastid DNA sequences
Am. J. Bot. 2003 90: 471-480. [Abstract] [Full Text] [Supplemental Data]  

Caroline J. Van den heede, Ronald L. L. Viane, and Mark W. Chase

Phylogenetic analysis of Asplenium subgenus Ceterach (Pteridophyta: Aspleniaceae) based on plastid and nuclear ribosomal ITS DNA sequences
Am. J. Bot. 2003 90: 481-495. [Abstract] [Full Text] [Supplemental Data]  

Rosabelle Samuel, Tod F. Stuessy, Karin Tremetsberger, Carlos M. Baeza, and Sonia Siljak-Yakovlev

Phylogenetic relationships among species of Hypochaeris (Asteraceae, Cichorieae) based on ITS, plastid trnL intron, trnL-F spacer, and matK sequences
Am. J. Bot. 2003 90: 496-507. [Abstract] [Full Text] [Supplemental Data]  

Damon P. Little and David S. Barrington

Major evolutionary events in the origin and diversification of the fern genus Polystichum (Dryopteridaceae)
Am. J. Bot. 2003 90: 508-514. [Abstract] [Full Text] [Supplemental Data]  

Systematics and Phytogeography:

Ronald K. Hoggard, Paul J. Kores, Mia Molvray, Gloria D. Hoggard, and David A. Broughton

Molecular systematics and biogeography of the amphibious genus Littorella (Plantaginaceae)
Am. J. Bot. 2003 90: 429-435. [Abstract] [Full Text] [Supplemental Data]  

Katarina Andreasen and Bruce G. Baldwin

Reexamination of relationships, habital evolution, and phylogeography of checker mallows (Sidalcea; Malvaceae) based on molecular phylogenetic data
Am. J. Bot. 2003 90: 436-444. [Abstract] [Full Text] [Supplemental Data]  

Tropical Biology:

Tatyana A. Lobova, Scott A. Mori, Frédéric Blanchard, Heather Peckham, and Pierre Charles-Dominique

Cecropia as a food resource for bats in French Guiana and the significance of fruit structure in seed dispersal and longevity
Am. J. Bot. 2003 90: 388-403. [Abstract] [Full Text]  

Errata:

ERRATUM
Am. J. Bot. 2003 90: 387. [Full Text]  

To see an article, click its [Full Text] link. To review many abstracts, check the boxes to the left of the titles you want, and click the 'Get All Checked Abstract(s)' button. To see one abstract at a time, click its [Abstract] link.