In this issue:

Am. J. Bot. 2000 87: 0. [Full Text]  

Anatomy and Morphology:

Edward L. Schneider and Sherwin Carlquist

SEM studies on vessels in ferns. 17. Psilotaceae
Am. J. Bot. 2000 87: 176-181. [Abstract] [Full Text]  

Ecology:

Laura A. Maragni, Alan K. Knapp, and Christine A. McAllister

Patterns and determinants of potential carbon gain in the C₃ evergreen Yucca glauca (Liliaceae) in a C₄ grassland
Am. J. Bot. 2000 87: 230-236. [Abstract] [Full Text]  

Stephen G. Weller, Kathleen H. Keeler, and Barbara A. Thomson

Clonal growth of Lithospermum caroliniense (Boraginaceae) in contrasting sand dune habitats
Am. J. Bot. 2000 87: 237-242. [Abstract] [Full Text]  

Hafiz Maherali and Evan H. DeLucia

Interactive effects of elevated CO₂ and temperature on water transport inponderosa pine
Am. J. Bot. 2000 87: 243-249. [Abstract] [Full Text]  

Physiology and Development:

Morris G. Cline

Execution of the auxin replacement apical dominance experiment in temperate woody species
Am. J. Bot. 2000 87: 182-190. [Abstract] [Full Text]  

Population Biology:

Karin L. Decker and Diana Pilson

Biased sex ratios in the dioecious annual Croton texensis (Euphorbiaceae) are not due to environmental sex determination
Am. J. Bot. 2000 87: 221-229. [Abstract] [Full Text]  

Reproductive Biology:

Steven E. Travers and Susan J. Mazer

The absence of cryptic self-incompatibility in Clarkia unguiculata (Onagraceae)
Am. J. Bot. 2000 87: 191-196. [Abstract] [Full Text]  

Tia-Lynn Ashman and Michael S. Hitchens

Dissecting the causes of variation in intra-inflorescence allocation in a sexually polymorphic species, Fragaria virginiana (Rosaceae)
Am. J. Bot. 2000 87: 197-204. [Abstract] [Full Text]  

Rebecca E. Irwin

Morphological variation and female reproductive success in two sympatric Trillium species: evidence for phenotypic selection in Trillium erectum and Trillium grandiflorum (Liliaceae)
Am. J. Bot. 2000 87: 205-214. [Abstract] [Full Text]  

Anne-Marie Roussy and Peter G. Kevan

How accessible are receptive megastrobili to pollen? the example of jack pine (Pinus banksiana)
Am. J. Bot. 2000 87: 215-220. [Abstract] [Full Text]  

Structure and Development:

Warren L. Wagner and Elizabeth M. Harris

A unique Hawaiian Schiedea (caryophyllaceae: Alsinoideae) with only five fertile stamens
Am. J. Bot. 2000 87: 153-160. [Abstract] [Full Text]  

Ranessa L. Cooper, Jeffrey M. Osborn, and C. Thomas Philbrick

Comparative pollen morphology and ultrastructure of the Callitrichaceae
Am. J. Bot. 2000 87: 161-175. [Abstract] [Full Text]  

Systematics:

Randall G. Terry, Robert S. Nowak, and Robin J. Tausch

Genetic variation in chloroplast and nuclear ribosomal DNA in Utah juniper (Juniperus osteosperma, Cupressaceae): evidence for interspecific gene flow
Am. J. Bot. 2000 87: 250-258. [Abstract] [Full Text]  

Randall J. Bayer, Christopher F. Puttock, and Scot A. Kelchner

Phylogeny of South African Gnaphalieae (Asteraceae) based on two noncoding chloroplast sequences
Am. J. Bot. 2000 87: 259-272. [Abstract] [Full Text]  

Stephen R. Downie, Deborah S. Katz-Downie, and Mark F. Watson

A phylogeny of the flowering plant family Apiaceae based on chloroplast DNA rpl16 and rpoC1 intron sequences: towards a suprageneric classification of subfamily Apioideae
Am. J. Bot. 2000 87: 273-292. [Abstract] [Full Text]  

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