In this issue:

Am. J. Bot. 2001 88: 0. [Full Text]  

Invited Special Paper:

Robert Turgeon, Richard Medville, and Kevin C. Nixon

The evolution of minor vein phloem and phloem loading
Am. J. Bot. 2001 88: 1331-1339. [Abstract] [Full Text]  

Book Review:

Laura R. Meagher and Thomas R. Meagher

Catered by Cassandra? Pandora's Picnic Basket
Am. J. Bot. 2001 88: 1523-1525. [Full Text]  

Ecology:

Lidia C. Yoshida and Edith B. Allen

Response to ammonium and nitrate by a mycorrhizal annual invasive grass and native shrub in southern California
Am. J. Bot. 2001 88: 1430-1436. [Abstract] [Full Text]  

Melanie Marshall and Fred R. Ganders

Sex-biased seed predation and the maintenance of females in a gynodioecious plant
Am. J. Bot. 2001 88: 1437-1443. [Abstract] [Full Text]  

Siti N. Hidayati, Jerry M. Baskin, and Carol C. Baskin

Dormancy-breaking and germination requirements for seeds of Symphoricarpos orbiculatus (Caprifoliaceae)
Am. J. Bot. 2001 88: 1444-1451. [Abstract] [Full Text]  

Gail W. T. Wilson, David C. Hartnett, Melinda D. Smith, and Kerri Kobbeman

Effects of mycorrhizae on growth and demography of tallgrass prairie forbs
Am. J. Bot. 2001 88: 1452-1457. [Abstract] [Full Text]  

Colleen K. Kelly, Daniel Harris, and Ruben Perez-Ishiwara

Is breaking up hard to do? Breakage, growth, and survival in the parasitic clonal plant Cuscuta corymbosa (Convolvulaceae)
Am. J. Bot. 2001 88: 1458-1468. [Abstract] [Full Text]  

John E. Titus and P. Gary Sullivan

Heterophylly in the yellow waterlily, Nuphar variegata (Nymphaeaceae): effects of [CO₂], natural sediment type, and water depth
Am. J. Bot. 2001 88: 1469-1478. [Abstract] [Full Text]  

Phycology:

Kirsten M. Müller, Mariana C. Oliveira, Robert G. Sheath, and Debashish Bhattacharya

Ribosomal DNA phylogeny of the Bangiophycidae (Rhodophyta) and the origin of secondary plastids
Am. J. Bot. 2001 88: 1390-1400. [Abstract] [Full Text]  

Physiology and Development:

Jean Armstrong and William Armstrong

Rice and Phragmites: effects of organic acids on growth, root permeability, and radial oxygen loss to the rhizosphere
Am. J. Bot. 2001 88: 1359-1370. [Abstract] [Full Text]  

Simon Pierce, Kate Maxwell, Howard Griffiths, and Klaus Winter

Hydrophobic trichome layers and epicuticular wax powders in Bromeliaceae
Am. J. Bot. 2001 88: 1371-1389. [Abstract] [Full Text]  

Population Biology:

Peter Dixon, Cynthia Weinig, and Johanna Schmitt

Susceptibility to UV damage in Impatiens capensis (Balsaminaceae): testing for opportunity costs to shade-avoidance and population differentiation
Am. J. Bot. 2001 88: 1401-1408. [Abstract] [Full Text]  

Jane Squirrell, Peter M. Hollingsworth, Richard M. Bateman, James H. Dickson, Marilyn H. S. Light, Michael MacConaill, and Mark C. Tebbitt

Partitioning and diversity of nuclear and organelle markers in native and introduced populations of Epipactis helleborine (Orchidaceae)
Am. J. Bot. 2001 88: 1409-1418. [Abstract] [Full Text]  

Reproductive Biology:

Lorne M. Wolfe and Janet L. Burns

A rare continual flowering strategy and its influence on offspring quality in a gynodioecious plant
Am. J. Bot. 2001 88: 1419-1423. [Abstract] [Full Text]  

Pierre-Olivier Cheptou, Jacques Lepart, and José Escarré

Inbreeding depression under intraspecific competition in a highly outcrossing population of Crepis sancta (Asteraceae): evidence for frequency-dependent variation
Am. J. Bot. 2001 88: 1424-1429. [Abstract] [Full Text]  

Structure and Development:

Cynthia S. Jones and Maxine A. Watson

Heteroblasty and preformation in mayapple, Podophyllum Peltatum (Berberidaceae): developmental flexibility and morphological constraint
Am. J. Bot. 2001 88: 1340-1358. [Abstract] [Full Text]  

Systematics, Phytogeography, and Evolution:

Alan E. Pepper and Laura E. Norwood

Evolution of Caulanthus amplexicaulis var. barbarae (Brassicaceae), a rare serpentine endemic plant: a molecular phylogenetic perspective
Am. J. Bot. 2001 88: 1479-1489. [Abstract] [Full Text]  

Michele D. Piercey-Normore and Paula T. DePriest

Algal switching among lichen symbioses
Am. J. Bot. 2001 88: 1490-1498. [Abstract] [Full Text]  

Michael J. Sanderson and James A. Doyle

Sources of error and confidence intervals in estimating the age of angiosperms from rbcL and 18S rDNA data
Am. J. Bot. 2001 88: 1499-1516. [Abstract] [Full Text]  

Yoko Yatabe, Shigeo Masuyama, Dedy Darnaedi, and Noriaki Murakami

Molecular systematics of the Asplenium nidus complex from Mt. Halimun National Park, Indonesia: evidence for reproductive isolation among three sympatric rbcL sequence types
Am. J. Bot. 2001 88: 1517-1522. [Abstract] [Full Text]  

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