In this issue:

Am. J. Bot. 2003 90: 0. [Full Text]  

Anatomy and Morphology:

Sandra J. Borgardt and Kevin C. Nixon

A comparative flower and fruit anatomical study of Quercus acutissima, a biennial-fruiting oak from the Cerris group (Fagaceae)
Am. J. Bot. 2003 90: 1567-1584. [Abstract] [Full Text] [PDF]  

Genetics and Molecular Biology:

Douglas E. Soltis, Pamela S. Soltis, Michael D. Bennett, and Ilia J. Leitch

Evolution of genome size in the angiosperms
Am. J. Bot. 2003 90: 1596-1603. [Abstract] [Full Text] [PDF] [Supplemental Data]  

Paleobotany:

Brian J. Axsmith, Rudolph Serbet, Michael Krings, Thomas N. Taylor, Edith L. Taylor, and Sergius H. Mamay

The Enigmatic Paleozoic plants Spermopteris and Phasmatocycas reconsidered
Am. J. Bot. 2003 90: 1585-1595. [Abstract] [Full Text] [PDF]  

Physiology and Development:

William R. Eisinger, Roberto A. Bogomolni, and Lincoln Taiz

Interactions between a blue-green reversible photoreceptor and a separate UV-B receptor in stomatal guard cells
Am. J. Bot. 2003 90: 1560-1566. [Abstract] [Full Text] [PDF]  

Population Biology:

Kenneth Birnbaum, Rob DeSalle, Charles M. Peters, and Philip N. Benfey

Integrating gene flow, crop biology, and farm management in on-farm conservation of avocado (Persea americana, Lauraceae)
Am. J. Bot. 2003 90: 1619-1627. [Abstract] [Full Text] [PDF]  

Jafet M. Nassar, J. L. Hamrick, and Theodore H. Fleming

Population genetic structure of Venezuelan chiropterophilous columnar cacti (Cactaceae)
Am. J. Bot. 2003 90: 1628-1637. [Abstract] [Full Text] [PDF] [Supplemental Data]  

Reproductive Biology:

Marieken G. M. Shaner and Diane L. Marshall

Under how wide a set of conditions will nonrandom mating occur in Raphanus sativus (Brassicaceae)?
Am. J. Bot. 2003 90: 1604-1611. [Abstract] [Full Text] [PDF]  

E. Cayenne Engel and Rebecca E. Irwin

Linking pollinator visitation rate and pollen receipt
Am. J. Bot. 2003 90: 1612-1618. [Abstract] [Full Text] [PDF]  

Structure and Development:

Amy Litt and Dennis W. Stevenson

Floral development and morphology of Vochysiaceae. I. The structure of the gynoecium
Am. J. Bot. 2003 90: 1533-1547. [Abstract] [Full Text] [PDF]  

Amy Litt and Dennis W. Stevenson

Floral development and morphology of Vochysiaceae. II. The position of the single fertile stamen
Am. J. Bot. 2003 90: 1548-1559. [Abstract] [Full Text] [PDF]  

Systematics and Phytogeography:

Robert J. Morley and Christopher W. Dick

Missing fossils, molecular clocks, and the origin of the Melastomataceae
Am. J. Bot. 2003 90: 1638-1644. [Abstract] [Full Text] [PDF]  

Tetsuo Ohi, Tadashi Kajita, and Jin Murata

Distinct geographic structure as evidenced by chloroplast DNA haplotypes and ploidy level in Japanese Aucuba (Aucubaceae)
Am. J. Bot. 2003 90: 1645-1652. [Abstract] [Full Text] [PDF] [Supplemental Data]  

Abigail J. Moore and Lynn Bohs

An ITS phylogeny of Balsamorhiza and Wyethia (Asteraceae: Heliantheae)
Am. J. Bot. 2003 90: 1653-1660. [Abstract] [Full Text] [PDF] [Supplemental Data]  

E. Christine Davis, Joseph B. Franklin, A. Jonathan Shaw, and Rytas Vilgalys

Endophytic Xylaria (Xylariaceae) among liverworts and angiosperms: phylogenetics, distribution, and symbiosis
Am. J. Bot. 2003 90: 1661-1667. [Abstract] [Full Text] [PDF] [Supplemental Data]  

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