In this issue:

Am. J. Bot. 2002 89: 0. [Full Text]  

Invited Special Paper:

Dominick J. Paolillo, Jr and Richard W. Zobel

The formation of adventitious roots on root axes is a widespread occurrence in field-grown dicotyledonous plants
Am. J. Bot. 2002 89: 1361-1372. [Abstract] [Full Text]  

Ecology:

James F. Cahill, Jr., Jeffrey P. Castelli, and Brenda B. Casper

Separate effects of human visitation and touch on plant growth and herbivory in an old-field community
Am. J. Bot. 2002 89: 1401-1409. [Abstract] [Full Text]  

Anna Stenström, Ingibjörg S. Jónsdóttir, and Magnus Augner

Genetic and environmental effects on morphology in clonal sedges in the Eurasian Arctic
Am. J. Bot. 2002 89: 1410-1421. [Abstract] [Full Text]  

Don Cipollini

Variation in the expression of chemical defenses in Alliaria petiolata (Brassicaceae) in the field and common garden
Am. J. Bot. 2002 89: 1422-1430. [Abstract] [Full Text]  

Susan C. L. McDowell

Photosynthetic characteristics of invasive and noninvasive species of Rubus (Rosaceae)
Am. J. Bot. 2002 89: 1431-1438. [Abstract] [Full Text]  

Anne Pringle and James D. Bever

Divergent phenologies may facilitate the coexistence of arbuscular mycorrhizal fungi in a North Carolina grassland
Am. J. Bot. 2002 89: 1439-1446. [Abstract] [Full Text]  

Paleobotany:

Gar W. Rothwell and Ruth A. Stockey

Anatomically preserved Cycadeoidea (Cycadeoidaceae), with a reevaluation of systematic characters for the seed cones of Bennettitales
Am. J. Bot. 2002 89: 1447-1458. [Abstract] [Full Text]  

Matts Lindbladh, Raymond O'Connor, and George L. Jacobson, Jr

Morphometric analysis of pollen grains for paleoecological studies: classification of Picea from eastern North America
Am. J. Bot. 2002 89: 1459-1467. [Abstract] [Full Text]  

Qi Wang, Shou-Gang Hao, De-Ming Wang, and David L. Dilcher

An anatomically preserved arborescent lycopsid, Sublepidodendron songziense (Sublepidodendraceae), from the Late Devonian of Hubei, China
Am. J. Bot. 2002 89: 1468-1477. [Abstract] [Full Text]  

Population Biology:

Jonathan D. Sleeman, Susan A. Dudley, John R. Pannell, and Spencer C. H. Barrett

Responses of carbon acquisition traits to irradiance and light quality in Mercurialis annua (Euphorbiaceae): evidence for weak integration of plastic responses
Am. J. Bot. 2002 89: 1388-1400. [Abstract] [Full Text]  

Reproductive Biology:

Lara I. Strittmatter, Vivian Negrón-Ortiz, and R. James Hickey

Subdioecy in Consolea spinosissima (Cactaceae): breeding system and embryological studies
Am. J. Bot. 2002 89: 1373-1387. [Abstract] [Full Text]  

Systematics and Phytogeography:

Rodger C. Evans and Christopher S. Campbell

The origin of the apple subfamily (Maloideae; Rosaceae) is clarified by DNA sequence data from duplicated GBSSI genes
Am. J. Bot. 2002 89: 1478-1484. [Abstract] [Full Text]  

José Aquileo Lomelí-Sención and Eduardo Sahagún-Godínez

Rediscovery of Pedilanthus coalcomanensis (Euphorbiaceae), a threatened endemic Mexican species
Am. J. Bot. 2002 89: 1485-1490. [Abstract] [Full Text]  

Andrew J. Henderson

Phenetic and phylogenetic analysis of Reinhardtia (Palmae)
Am. J. Bot. 2002 89: 1491-1502. [Abstract] [Full Text]  

Kenneth M. Cameron, Kenneth J. Wurdack, and Richard W. Jobson

Molecular evidence for the common origin of snap-traps among carnivorous plants
Am. J. Bot. 2002 89: 1503-1509. [Abstract] [Full Text] [Supplemental Data]  

Sasa Stefanovic, Lori Krueger, and Richard G. Olmstead

Monophyly of the Convolvulaceae and circumscription of their major lineages based on DNA sequences of multiple chloroplast loci
Am. J. Bot. 2002 89: 1510-1522. [Abstract] [Full Text]  

Annette W. Coleman

Comparison of Eudorina/Pleodorina ITS sequences of isolates from nature with those from experimental hybrids
Am. J. Bot. 2002 89: 1523-1530. [Abstract] [Full Text]  

Kenneth J. Sytsma, Jeffery Morawetz, J. Chris Pires, Molly Nepokroeff, Elena Conti, Michelle Zjhra, Jocelyn C. Hall, and Mark W. Chase

Urticalean rosids: circumscription, rosid ancestry, and phylogenetics based on rbcL, trnL-F, and ndhF sequences
Am. J. Bot. 2002 89: 1531-1546. [Abstract] [Full Text]  

Brief Communications:

Debra Z. Stults, Brian J. Axsmith, and Douglas Haywick

Evidence of Carpinus (Betulaceae) in the Late Tertiary (Pliocene) of Alabama
Am. J. Bot. 2002 89: 1547-1549. [Abstract] [Full Text]  

John M. Burke, Keith A. Gardner, and Loren H. Rieseberg

The potential for gene flow between cultivated and wild sunflower (Helianthus annuus) in the United States
Am. J. Bot. 2002 89: 1550-1552. [Abstract] [Full Text]  

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