AMERICAN JOURNAL OF BOTANY

Volume 91, Number 3,  March 2004

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Anatomy and Morphology

           

Anatomy of the unusual stigma in Orchidanth (Lowiaceae)

            LOUISE B.PEDERSEN AND BO JOHANSEN                                                                                 299

 

Development and morphogenesis
 

Comparative analysis of leaf shape development in Eschscholzia californica  and other Papaveraceae-Eschscholzioideae

            STEFAN GLEISSBERG                                                                                                                     306

Structure and Development

 

Cytokinesis. in Coleochaete orbicularis (Charophyceae): an ancestral mechanism inherited by plants               

MARTHA E. COOK                                                                                                                          313

 

Floral development and molecular phylogeny support the generic statues of Tasmannia (Winteraceae)

ANDREW N. DOUST   AND  ANDREW N. DRINNAN                                                                 321

 

The four-celled female gametophyte of  lllicium (llliciaceae; Austrobaileyales): implications for

understanding the origin and early evolution of monocots, eumagnoliids and eudicots

            JOSEPH  H. WILLIAMS AND WILLIAM E. FRIEDMAN                                                               332

 

Biomechanics and anatomy of  Lycopersicon esculentum fruit peels and enzyme-treated  samples

ANTONIO J. MATAS, EDWARD D.COBB, JAMES A. BARTSCH, DOMINICK J. PAOLILLO,

JR., AND KARL. J. NOKLAS                                                                                                           352

 

Ontogeny of triovulate cones of Ephefra intermedia and origin of the outer envelope of ovules of

Ephedraceae

            YONG YANG                                                                                                                                    361

 

Physiology and Development

 

Analysis of circular bordered pit  function. I. Angiosperm vessels with homogenous pit membranes

JOHN S. SPERRY AND UME G. HACKE                                                                                       369

 

Analysis of circular bordered pit funtion. II Gymnosperm tracheids with torus-margo pit membranes

UWE G. HACKE, JOHN S. SPERRY AND JARMILA PITTERMANN                                          386

 

Population Biology

 

Morphological and RAPD analysis of hybridization between Quercus affinis and Q. Laurina

(Fagaceae), two Mexican red oaks

ANTONIO GONZALEZ-RODRIGUEZ, DULCE M. ARIAS, SUSANA VALENCIA AND

KEN OYAMA                                                                                                                                  401

 

Reproductive Biology

 

Evolution of obligate pollination mutualism in New Caledonian Phyllanthus ( Euphorbiaceae)

ATSUSHI KAWAKITA AND MAKOTO KATO                                                                          410

 

Ecology

               

                Belowground bud banks and meristem limitation in tallgrass prairie plant populations

            EMILY J. BENSON, DAVID C. HARTNETT AND KALE H. MANN                                         416

 

Caribou-induced changes in species dominance of lichen woodlands: an analysis of plant remains

            STEPHANE BOUDREAU AND SERGE PAYETTE                                                                      422

 

            Allometric gender allocation in Ambrosia artemisiifolia (Asteraceae) has adaptive plasticity

            VIVIANE PAQUIN AND LONNIE W. AARSSEN                                                                                         430

 

Systematics

 

Chromosome numbers and karyotype evlution in holoparasitic Orobanche (Orobanchaceae) and

related genera

GERALD M. SCHEEWEISS, TERESA PALOMEQUE, ALISON E. COLWELL AND

HANNA WEISS-SCHNEEWEISS                                                                                                 439

 

Phylogenetic classification of peltigeralean fungi (Peltigerales, Ascomycota) based on ribosomal

RNA small and large subunits

JOLANTA MIADLIKOWSKA AND FRANCOIS LUTZONI                                                      449

 

Post-glacial history of Trillium grandiflorum (Melanthiaceae) in eastern North America :

inferences from phylogeography

STEVEN R. GRIFFIN AND SPENCER C.H. BARRETT                                                              465

 

Patterns of evolution in western North American Mimulus (Phrymaceae)                                  

PAUL M. BEARDSLEY, STEVE E. SCHOEING, JUSTEN B. WHITTALL AND

RICHARD G. OLMSTEAD                                                                                                           474

 

Integeneric and infrafamillial phylogeny of subfamily Monsteroideae (Araceae) revealed by chloroplast

trn LF sequences

SHEH-MAY TAM, PETER C. BOYCE, TIM M. UPSON, DENIS BARABE, ANNE BRUNEAU,

FELIX FOREST AND JOHN S. PARKER

 

Paleobotany

 

Anatomically preserved Liquidambar (Altingiaceae) from the middle Miocene of Yakima Canyon,

Washington state, USA, and its biogeographic implications

KATHLEEN B. PIGG, STEFANIE M. ICKERT-BOND AND JUN WEN                                  499

 

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