In this issue:

Am. J. Bot. 1999 86: 0. [Full Text]  

Brief Communication:

Christopher D. Rock and Patrick P. F. Ng

Dominant Wilty mutants of Zea mays (Poaceae) are not impaired in abscisic acidperception or metabolism
Am. J. Bot. 1999 86: 1796-1800. [Abstract] [Full Text]  

Development and Morphogenesis:

Pirkko Siikamäki

Developmental instability in hybrids between Lychnis viscaria and Lychnis alpina (Caryophyllaceae)
Am. J. Bot. 1999 86: 1683-1686. [Abstract] [Full Text]  

Ecology:

Francisco Lloret, Miguel Verdú, Noe Flores-Hernández, and Alfonso Valiente-Banuet

Fire and resprouting in Mediterranean ecosystems: insights from an external biogeographical region, the mexical shrubland
Am. J. Bot. 1999 86: 1655-1661. [Abstract] [Full Text]  

Paleobotany:

Genaro R. Hernández-Castillo and Sergio R. S. Cevallos-Ferriz

Reproductive and vegetative organs with affinities to Haloragaceae from the Upper Cretaceous Huepac Chert Locality of Sonora, Mexico
Am. J. Bot. 1999 86: 1717-1734. [Abstract] [Full Text]  

Population Biology:

Sigurd M. Såstad, Bård Pedersen, and Kjetil Digre

Habitat-specific genetic effects on growth rate and morphology across pH and water-level gradients within a population of the moss Sphagnum angustifolium (Sphagnaceae)
Am. J. Bot. 1999 86: 1687-1698. [Abstract] [Full Text]  

Reproductive Biology:

Hisashi Sato and Tetsukazu Yahara

Trade-offs between flower number and investment to a flower in selfing and outcrossing varieties of Impatiens hypophylla (Balsaminaceae)
Am. J. Bot. 1999 86: 1699-1707. [Abstract] [Full Text]  

Montserrat Arista, Pedro L. Ortiz, and Salvador Talavera

Apical pattern of fruit production in the racemes of Ceratonia siliqua (Leguminosae: Caesalpinioideae): role of pollinators
Am. J. Bot. 1999 86: 1708-1716. [Abstract] [Full Text]  

Structure and Development:

Sarah S. Kreunen and Jeffrey M. Osborn

Pollen and anther development in Nelumbo (Nelumbonaceae)
Am. J. Bot. 1999 86: 1662-1676. [Abstract] [Full Text]  

Christopher H. Briand, Shannon M. Campion, Damion A. Dzambo, and Kerri A. Wilson

Biomechanical properties of the trunk of the devil's walking stick (Aralia spinosa; Araliaceae) during the crown-building phase: implications for tree architecture
Am. J. Bot. 1999 86: 1677-1682. [Abstract] [Full Text]  

Systematics and Phytogeography:

Khidir W. Hilu and Lawrence A. Alice

Evolutionary implications of matK indels in Poaceae
Am. J. Bot. 1999 86: 1735-1741. [Abstract] [Full Text]  

Xiao-Ru Wang, Yoshihiko Tsumura, Hiroshi Yoshimaru, Kazutoshi Nagasaka, and Alfred E. Szmidt

Phylogenetic relationships of Eurasian pines (Pinus, Pinaceae) based on chloroplast rbcL, MATK, RPL20-RPS18 spacer, and TRNV intron sequences
Am. J. Bot. 1999 86: 1742-1753. [Abstract] [Full Text]  

E. Durant McArthur and Stewart C. Sanderson

Cytogeography and chromosome evolution of subgenus Tridentatae of Artemisia (Asteraceae)
Am. J. Bot. 1999 86: 1754-1775. [Abstract] [Full Text]  

Richard I. Milne, Richard J. Abbott, Kirsten Wolff, and David F. Chamberlain

Hybridization among sympatric species of Rhododendron (Ericaceae) in Turkey: morphological and molecular evidence
Am. J. Bot. 1999 86: 1776-1785. [Abstract] [Full Text]  

Tropical Biology:

Stuart J. Davies and Peter S. Ashton

Phenology and fecundity in 11 sympatric pioneer species of Macaranga (Euphorbiaceae)in Borneo
Am. J. Bot. 1999 86: 1786-1795. [Abstract] [Full Text]  

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