In this issue:

Am. J. Bot. 1999 86: 0. [Full Text]  

Anatomy and Morphology:

Xiaojie Li, Jerry M. Baskin, and Carol C. Baskin

Anatomy of two mechanisms of breaking physical dormancy by experimental treatments in seeds of two North American Rhus species (Anacardiaceae)
Am. J. Bot. 1999 86: 1505-1511. [Abstract] [Full Text]  

Book Review:

Christopher G. Eckert

Clonal plant research: proliferation, integration, but not much evolution
Am. J. Bot. 1999 86: 1649-1654. [Full Text]  

Brief Communication:

Michael L. Christianson and Jason S. Hornbuckle

Phenylurea cytokinins assayed for induction of shoot buds in the moss Funaria hygrometrica
Am. J. Bot. 1999 86: 1645-1648. [Abstract] [Full Text]  

Ecology:

Nishanta Rajakaruna and Bruce A. Bohm

The edaphic factor and patterns of variation in Lasthenia californica (Asteraceae)
Am. J. Bot. 1999 86: 1576-1596. [Abstract] [Full Text]  

Erik T. Nilsen, John F. Walker, Orson K. Miller, Shawn W. Semones, Thomas T. Lei, and Barton D. Clinton

Inhibition of seedling survival under Rhododendron maximum (Ericaceae): could allelopathy be a cause?
Am. J. Bot. 1999 86: 1597-1605. [Abstract] [Full Text]  

Mark J. Hainds, Robert J. Mitchell, Brian J. Palik, Lindsay R. Boring, and Dean H. Gjerstad

Distribution of native legumes (Leguminoseae) in frequently burned longleaf pine (Pinaceae)–wiregrass (Poaceae) ecosystems
Am. J. Bot. 1999 86: 1606-1614. [Abstract] [Full Text]  

Paleobotany:

Hongqi Li and David Winship Taylor

Vessel-bearing stems of ASOVINEA TIANIIgen. et sp. nov. (Gigantopteridales) from theUpper Permian of Guizhou Province, China
Am. J. Bot. 1999 86: 1563-1575. [Abstract] [Full Text]  

Physiology and Development:

Matthew J. Linton and Park S. Nobel

Loss of water transport capacity due to xylem cavitation in roots of two CAM succulents
Am. J. Bot. 1999 86: 1538-1543. [Abstract] [Full Text]  

A. Ester Sztein, Jerry D. Cohen, Inés García de la Fuente, and Todd J. Cooke

Auxin metabolism in mosses and liverworts
Am. J. Bot. 1999 86: 1544-1555. [Abstract] [Full Text]  

Population Biology:

Rebecca W. Dolan, Rebecca Yahr, Eric S. Menges, and Matthew D. Halfhill

Conservation implications of genetic variation in three rare species endemic to Florida rosemary scrub
Am. J. Bot. 1999 86: 1556-1562. [Abstract] [Full Text]  

Structure and Development:

Amber Moody, Pamela K. Diggle, and David A. Steingraeber

Developmental analysis of the evolutionary origin of vegetative propagules in Mimulus gemmiparus (Scrophulariaceae)
Am. J. Bot. 1999 86: 1512-1522. [Abstract] [Full Text]  

Sandra K. Floyd, Veronica T. Lerner, and William E. Friedman

A developmental and evolutionary analysis of embryology in Platanus (platanaceae), abasal eudicot
Am. J. Bot. 1999 86: 1523-1537. [Abstract] [Full Text]  

Systematics:

Terry B. Ball, John S. Gardner, and Nicole Anderson

Identifying inflorescence phytoliths from selected species of wheat (Triticum monococcum, T. dicoccon, T. dicoccoides, and T. aestivum) and barley (Hordeum vulgare and H. spontaneum) (Gramineae)
Am. J. Bot. 1999 86: 1615-1623. [Abstract] [Full Text]  

Jun Wen and Joan W. Nowicke

Pollen ultrastructure of Panax(the ginseng genus, Araliaceae),an eastern Asian and eastern NorthAmerican disjunct genus
Am. J. Bot. 1999 86: 1624-1636. [Abstract] [Full Text]  

Karen N. Max, Suzette K. Mouchaty, and Kent E. Schwaegerle

Allozyme and morphological variation in two subspecies of Dryas octopetala (Rosaceae)in Alaska
Am. J. Bot. 1999 86: 1637-1644. [Abstract] [Full Text]  

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