In this issue:

Am. J. Bot. 2003 90: 0. [Full Text]  

Invited Special Paper:

Karl J. Niklas

The Bio-Logic and machinery of plant morphogenesis
Am. J. Bot. 2003 90: 515-525. [Abstract] [Full Text]  

Anatomy and Morphology:

Jianquan Liu and Shuichi Noshiro

Lack of latitudinal trends in wood anatomy of Dodonaea viscosa (Sapindaceae), a species with a worldwide distribution
Am. J. Bot. 2003 90: 532-539. [Abstract] [Full Text] [Supplemental Data]  

Book Review:

Brenda B. Casper

Understanding feedback between ecological systems requires feedback among scientists
Am. J. Bot. 2003 90: 658-661. [Full Text]  

Bryology and Lichenology:

A. Jonathan Shaw, Olaf Werner, and Rosa M. Ros

Intercontinental Mediterranean disjunct mosses: morphological and molecular patterns
Am. J. Bot. 2003 90: 540-550. [Abstract] [Full Text] [Supplemental Data]  

Development and Morphogenesis:

Erin E. Irish, Eugene J. Szymkowiak, and Kathryn Garrels

The wandering carpel mutation of Zea mays (Gramineae) causes misorientation and loss of zygomorphy in flowers and two-seeded kernels
Am. J. Bot. 2003 90: 551-560. [Abstract] [Full Text]  

Ecology:

Lenny L. R. Kouwenberg, Jennifer C. McElwain, Wolfram M. Kürschner, Friederike Wagner, David J. Beerling, Francis E. Mayle, and Henk Visscher

Stomatal frequency adjustment of four conifer species to historical changes in atmospheric CO₂
Am. J. Bot. 2003 90: 610-619. [Abstract] [Full Text]  

Carol C. Baskin, Jerry M. Baskin, Edward W. Chester, and Marian Smith

Ethylene as a possible cue for seed germination of Schoenoplectus hallii (Cyperaceae), a rare summer annual of occasionally flooded sites
Am. J. Bot. 2003 90: 620-627. [Abstract] [Full Text]  

Genetics and Molecular Biology:

Xianan Liu and W. Vance Baird

The ribosomal small-subunit protein S28 gene from Helianthus annuus (Asteraceae) is down-regulated in response to drought, high salinity, and abscisic acid
Am. J. Bot. 2003 90: 526-531. [Abstract] [Full Text]  

Population Biology:

Yu-Chung Chiang, Barbara A. Schaal, Chang-Hung Chou, Shong Huang, and Tzen-Yuh Chiang

Contrasting selection modes at the Adh1 locus in outcrossing Miscanthus sinensis vs. inbreeding Miscanthus condensatus (Poaceae)
Am. J. Bot. 2003 90: 561-570. [Abstract] [Full Text] [Supplemental Data][Supplemental Data]  

Thure P. Hauser, Christian Damgaard, and Rikke B. Jørgensen

Frequency-dependent fitness of hybrids between oilseed rape (Brassica napus) and weedy B. rapa (Brassicaceae)
Am. J. Bot. 2003 90: 571-578. [Abstract] [Full Text]  

Reproductive Biology:

Carine L. Collin and Jacqui A. Shykoff

Outcrossing rates in the gynomonoecious-gynodioecious species Dianthus sylvestris (Caryophyllaceae)
Am. J. Bot. 2003 90: 579-585. [Abstract] [Full Text] [Supplemental Data]  

Jennifer Forman and Richard V. Kesseli

Sexual reproduction in the invasive species Fallopia japonica (Polygonaceae)
Am. J. Bot. 2003 90: 586-592. [Abstract] [Full Text]  

Adriana Otero-Arnaiz, Alejandro Casas, Carmen Bartolo, Edgar Pérez-Negrón, and Alfonso Valiente-Banuet

Evolution of Polaskia chichipe (Cactaceae) under domestication in the Tehuacán Valley, central Mexico: reproductive biology
Am. J. Bot. 2003 90: 593-602. [Abstract] [Full Text]  

J. C. López-Almansa, J. R. Pannell, and L. Gil

Female sterility in Ulmus minor (Ulmaceae): a hypothesis invoking the cost of sex in a clonal plant
Am. J. Bot. 2003 90: 603-609. [Abstract] [Full Text]  

Systematics:

Erin R. Sanders, Kenneth G. Karol, and Richard M. McCourt

Occurrence of matK in a trnK group II intron in charophyte green algae and phylogeny of the Characeae
Am. J. Bot. 2003 90: 628-633. [Abstract] [Full Text]  

Lowell E. Urbatsch, Roland P. Roberts, and Vesna Karaman

Phylogenetic evaluation of Xylothamia, Gundlachia, and related genera (Asteraceae, Astereae) based on ETS and ITS nrDNA sequence data
Am. J. Bot. 2003 90: 634-649. [Abstract] [Full Text] [Supplemental Data]  

Tropical Biology:

M. Soubadra Devy and Priya Davidar

Pollination systems of trees in Kakachi, a mid-elevation wet evergreen forest in Western Ghats, India
Am. J. Bot. 2003 90: 650-657. [Abstract] [Full Text] [Supplemental Data]  

Errata:

ERRATUM
Am. J. Bot. 2003 90: 578. [Full Text]  

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