In this issue:

Am. J. Bot. 2004 91: 0. [Full Text]  

Invited Special Paper:

Sean W. Graham and Spencer C. H. Barrett

Phylogenetic reconstruction of the evolution of stylar polymorphisms in Narcissus (Amaryllidaceae)
Am. J. Bot. 2004 91: 1007-1021. [Abstract] [Full Text] [Supplementary Data]  

Ecology:

Vladimir Douhovnikoff, Adelaide M. Cheng, and Richard S. Dodd

Incidence, size and spatial structure of clones in second-growth stands of coast redwood, Sequoia sempervirens (Cupressaceae)
Am. J. Bot. 2004 91: 1140-1146. [Abstract] [Full Text]  

Genetics and Molecular Biology:

J. Chris Pires, K. Yoong Lim, Ales Kovarík, Roman Matyásek, Amy Boyd, Andrew R. Leitch, Ilia J. Leitch, Michael D. Bennett, Pamela S. Soltis, and Douglas E. Soltis

Molecular cytogenetic analysis of recently evolved Tragopogon (Asteraceae) allopolyploids reveal a karyotype that is additive of the diploid progenitors
Am. J. Bot. 2004 91: 1022-1035. [Abstract] [Full Text]  

Mona Riihimäki and Outi Savolainen

Environmental and genetic effects on flowering differences between northern and southern populations of Arabidopsis lyrata (Brassicaceae)
Am. J. Bot. 2004 91: 1036-1045. [Abstract] [Full Text]  

Paleobotany:

Stefan A. Little, Ruth A. Stockey, and Richard C. Keating

Duabanga-like leaves from the Middle Eocene Princeton chert and comparative leaf histology of Lythraceae sensu lato
Am. J. Bot. 2004 91: 1126-1139. [Abstract] [Full Text]  

Population Biology:

Tara A. Forbis and Daniel F. Doak

Seedling establishment and life history trade-offs in alpine plants
Am. J. Bot. 2004 91: 1147-1153. [Abstract] [Full Text]  

Reproductive Biology:

Janette A. Steets and Tia-Lynn Ashman

Herbivory alters the expression of a mixed-mating system
Am. J. Bot. 2004 91: 1046-1051. [Abstract] [Full Text]  

Juan Francisco Ornelas, Leonor Jiménez, Clementina González, and Angélica Hernández

Reproductive ecology of distylous Palicourea Padifolia (Rubiaceae) in a tropical montane cloud forest. I. Hummingbirds' effectiveness as pollen vectors
Am. J. Bot. 2004 91: 1052-1060. [Abstract] [Full Text]  

Juan Francisco Ornelas, Clementina González, Leonor Jiménez, Carlos Lara, and Armando J. Martínez

Reproductive ecology of distylous Palicourea padifolia (Rubiaceae) in a tropical montane cloud forest. II. Attracting and rewarding mutualistic and antagonistic visitors
Am. J. Bot. 2004 91: 1061-1069. [Abstract] [Full Text]  

Systematics:

Mark A. Carine, Stephen J. Russell, Arnoldo Santos-Guerra, and Javier Francisco-Ortega

Relationships of the Macaronesian and Mediterranean floras: molecular evidence for multiple colonizations into Macaronesia and back-colonization of the continent in Convolvulus (Convolvulaceae)
Am. J. Bot. 2004 91: 1070-1085. [Abstract] [Full Text] [Supplementary Data]  

Charles A. Butterworth and Robert S. Wallace

Phylogenetic studies of Mammillaria (Cactaceae)—insights from chloroplast sequence variation and hypothesis testing using the parametric bootstrap
Am. J. Bot. 2004 91: 1086-1098. [Abstract] [Full Text] [Supplementary Data]  

Raúl Acevedo-Rosas, Kenneth Cameron, Victoria Sosa, and Susan Pell

A molecular phylogenetic study of Graptopetalum (Crassulaceae) based on ETS, ITS, RPL16, and TRNL-F nucleotide sequences
Am. J. Bot. 2004 91: 1099-1104. [Abstract] [Full Text] [Supplementary Data]  

Peter W. Fritsch, Frank Almeda, Susanne S. Renner, Angela B. Martins, and Boni C. Cruz

Phylogeny and circumscription of the near-endemic Brazilian tribe Microlicieae (Melastomataceae)
Am. J. Bot. 2004 91: 1105-1114. [Abstract] [Full Text] [Supplementary Data]  

Jay B. Walker, Kenneth J. Sytsma, Jens Treutlein, and Michael Wink

Salvia (Lamiaceae) is not monophyletic: implications for the systematics, radiation, and ecological specializations of Salvia and tribe Mentheae
Am. J. Bot. 2004 91: 1115-1125. [Abstract] [Full Text] [Supplementary Data]  

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