MONDAY MORNING, 7 AUGUST 2000


7:00 - 8:30 AM BREAKFAST: ABLS (Ticketed Event). Doubletree, Washington/Idaho room

SESSION 1 OCC, room A 105-106

SYMPOSIUM: BSA Past-President's Symposium - New frontiers in botany.

Organized by: CAROL C. BASKIN, School of Biological Sciences and Department of Agronomy, University of Kentucky, Lexington, KY 40506. Tele: 606-257-3996, E-mail: ccbask0@pop.uky.edu
Presiding: CAROL C. BASKIN, University of Kentucky, Lexington

8:00 1-1 Crane, Peter R. Royal Botanic Gardens, Kew, Richmond, Surrey, U.K. Paleobotany: Back to the future.

8:30 1-2 Schemske, Douglas W. University of Washington, Seattle. Ecological genetics of adaptation and speciation: Merging the old and the new.

9:00 1-3 Ledley, Tamara Shapiro. Technical Educational Research Centers, Cambridge, MA. Global climate change: An Earth system perspective.

9:30 1-4 Donoghue, Michael J. Harvard University Herbaria, Cambridge, MA and Yale University, New Haven, CT. Frontiers in phylogenetic biology.


SESSION 2 OCC, room B 110-112

CONTRIBUTED PAPERS: ASPT / Systematics Section, BSA - Rosaceae, phylogenetic methods

Presiding: LAWRENCE A. ALICE, Biotechnology Center and Center for Biodiveristy Studies, Western Kentucky University, Bowling Green, KY 42101. Tele: 270-745-7029 E-mail: lawrence.alice@wku.edu.

8:00 2-1 Berggren, Scott Thomas*1; Sangtae Lee2; and Jun Wen1. <SUP>1,3</SUP>Department of Biology, Colorado State 1Colorado State University, Fort Collins; 2Sungkyunkwan University, Suwon, Korea. Phylogenetic studies in the Amygdaloideae (Rosaceae) using ITS and ndhF sequences.

8:15 2-2 Dickinson, Timothy A.*1,2; Rodger E. Evans2; and Christopher S. Campbell2. 1 Royal Ontario Museum, Toronto and University of Toronto; 2University of Maine, Orono. Phylogenetic relationships between Crataegus and Mespilus (Rosaceae subf. Maloideae) based on rDNA sequence variation.

8:30 2-3 EVANS, RODGER C.*; AND CHRISTOPER S. CAMPBELL. University of Maine, Orono. The polyploid origin of a large clade: Nuclear Granule-Bound Starch Synthase (GBSSI or waxy) gene sequences support a spiraeoid ancestry of the Maloideae (Rosaceae).

8:45 2-4 EVANS, RODGER C.; AND CHRISTOPHER S. CAMPBELL.* University of Maine, Orono. A multigene tree of the Rosales.

9:00 2-5 ALICE, LAWRENCE A.*; AND DUSTIN K. CONOVER. Western Kentucky University, Bowling Green. Systematics of Rubus (Rosoideae; Rosaceae) based on nuclear ribosomal ITS and chloroplast trnK intron DNA sequences.

9:15 2-6 VANDEN HEUVEL, BRIAN DAVID*; AND C. RANDAL LINDER. The University of Texas at Austin. A Molecular Phylogeny for Cercocarpus H.B.K. (Rosaceae) using the External Transcribed Spacer of the Nuclear Ribosomal Repeat.

9:30 2-7 KELCHNER, SCOT A.*; RANDALL J. BAYER; ROBERT J. CHINNOCK; MICHAEL D. CRISP; AND JUDY G. WEST. CSIRO Plant Industry, Canberra, Australia. A data partition analysis of noncoding sequence evolution in Bontia and Myoporaceae.

9:45 2-8 LUTZONI, FRANCOIS*; PETER WAGNER; AND VALERIE REEB. The Field Museum, Chicago, IL. Integrating ambiguously aligned regions of DNA sequences in phylogenetic analyses without violating positional homology.

10:00 BREAK

10:15 2-9 OCHOTERENA, HELGA*; AND MARK PITKIN SIMMONS. Cornell University, Ithaca, NY. Justification and methods for incorporating gap characters in sequence-based phylogenetic analyses.

10:30 2-10 SIMMONS, MARK PITKIN*; AND HELGA OCHOTERENA. Cornell University, Ithaca, NY. Effects of gap characters on sequence-based phylogenetic analyses.

10:45 2-11 KELCHNER, SCOT A. CSIRO Plant Industry, Canberra. Alignment and analysis of noncoding cpDNA sequences: implications of molecular evolution for phylogeny estimation.

11:00 2-12 CHASE, MARK W.; VINCENT SAVOLAINEN*; KEI TAKAHASHI; DOUGLAS E. SOLTIS; AND PAMELA S. SOLTIS. Royal Botanic Gardens, Kew, UK; Pennsylvania State University, University Park; Washington State University, Pullman. Large-scale phylogeny of flowering plants 1: simple tree-building methods work better.

11:15 2-13 CHATROU, LARS; VINCENT SAVOLAINEN*; MARK W. CHASE; MARTYN POWELL; AND YIN-LONG QIU. Royal Botanic Gardens, Kew, UK; University of Massachusetts, Amherst. Large-scale phylogeny of flowering plants 2: the faster the better.

11:30 2-14 RAUBESON, LINDA A*; MARY E COSNER; ANDREA OESTREICH; AND ROBERT K. JANSEN. Central Washington University, Ellensburg; University of Texas, Austin. Molecular characters in phylogeny reconstruction: A comparison of nucleotide data and chloroplast genome structural changes.

11:45 2-15 CANTINO, PHILIP D.*; AND MICHAEL J. DONOGHUE. Ohio University, Athens; Harvard University, Cambridge, MA. Objectives and progress of the PhyloCode project.


SESSION 3 OCC, room B 117-119

CONTRIBUTED PAPERS: ASPT / Systematics Section, BSA - Lamiaceae, Scrophulariaceae, parasitic plants

Presiding: JANET BARBER, Integrative Biology, University of Texas, Austin, TX 78712. Tele: 512-471-8854, E-mail: jbarber@uts.cc.utexas.edu.

8:00 3-1 BARBER, JANET C.*; JAVIER FRANCISCO-ORTEGA; ARNOLDO SANTOS-GUERRA; KATHRYN TURNER; AND ROBERT K. JANSEN. University of Texas, Austin; Florida International University, Unversity Park; Jardín de Aclimatación de La Orotava, Puerto de la Cruz, Tenerife, Canary Islands, Spain. Origin of Macaronesian Sideritis L. (Lamiaceae) inferred from sequences of two non-coding regions of chloroplast DNA.

8:15 3-2 OLMSTEAD, RICHARD G.*; PHILIP D. CANTINO; BRENDAN LEPSCHI; AND PATRICK A. REEVES. University of Washington, Seattle; Ohio University, Athens; Australian National Herbarium, Canberra. A molecular systematic study of the Prostantheroideae (Lamiaceae), including Chloantheae (formerly Verbenaceae).

8:30 3-3 BEARDSLEY, PAUL M.*; AND RICHARD G. OLMSTEAD. University of Washington, Seattle. A phylogenetic analysis of the genus Mimulus and tribe Mimulueae (Lamiales).

8:45 3-4 BARBER1, JANET C.*; JAVIER FRANCISCO-ORTEGA2; ARNOLDO SANTOS-GUERRA3; AND ROBERT K. JANSEN1. University of Texas, Austin; Florida International University, University Park; Jardín de Aclimatación de La Orotava, Puerto de la Cruz, Tenerife, Canary Islands, Spain. Evolution of Sideritis L. (Lamiaceae) in Macaronesia based on an analysis of chloroplast and nuclear datasets.

9:00 3-5 ALBACH, DIRK C.*; AND MARK W. CHASE. Botanisches Institut der Universität Wien, Vienna, Austria; and Royal Botanic Gardens Kew, U. K. Phylogeny of Veroniceae based on ITS-sequence-analysis - A comparison with morphology, biochemistry, and chromosome number.

9:15 3-6 ELISENS, WAYNE*; MIA MOLVRAY; PAUL KORES; AND CLAUDE DEPAMPHILIS. University of Oklahoma, Norman; and Pennsylvania State University, University Park. ITS sequence variation among climbing snapdragons (Veronicaceae): implications for delimiting genera and evaluating crossing data.

9:30 3-7 DATWYLER, SHANNON L.*; AND ANDREA D. WOLFE. Ohio State University, Columbus. Evolutionary and biogeographic relationships among the wooly-anthered Penstemons (Scrophulariaceae).

9:45 3-8 WOLFE, ANDREA D.*; CHRISTOPHER P. RANDLE; AND SHANNON L. DATWYLER. The Ohio State University, Columbus. Phylogeography and character evolution of the genus Penstemon (Scrophulariaceae).

10:00 BREAK

10:15 3-9 YOUNG, NELSON D.*; CAROLINE YOON; AND MITRA AZODI. Trinity University, San Antonio. Speciation by allopolyploidy in Castilleja: the case of C. dissitifora.

10:30 3-10 STEFANOVIC, SASA*; AND RICHARD G. OLMSTEAD. University of Washington, Seattle. Molecular systematics of Convolvulaceae inferred from cpDNA sequences.

10:45 3-11 MCNEAL, JOEL R.*; AND CLAUDE W. DEPAMPHILIS. Pennsylvania State University, University Park. Origin and molecular systematics of the parasitic plant genus Cuscuta (dodder).

11:00 3-12 SMITH, R. ALAN*; DIANE M. FERGUSON; TODD J. BARKMAN; AND CLAUDE W. DEPAMPHILIS. Vanderbilt University, Nashville, TN; and Pennsylvania State Univerisity, University Park. Molecular phylogenetic evidence for the origin of Lennoaceae: A case of adelphoparasitism in the angiosperms?

11:15 3-13 MÜLLER1, KAI*; THOMAS BORSCH1; LAURENT LEGENDRE2; STEFAN POREMBSKI3; AND WILHELM BARTHLOTT1. 1Friedrich-Wilhelms-Universität Bonn, Germany; 2Universite de Reims Champagne-Ardenne, Reims Cedex, France; 3Universität Rostock, Wismarsche, Germany. A phylogeny of Lentibulariaceae based on sequences of matK and adjacent noncoding regions.

11:30 3-14 Barkman, Todd J.; Joel R. McNeal; Nelson D. Young; and Claude W. dePamphilis.* Pennsylvania State University, University Park; and Trinity University, San Antonio, TX. Multiple origins of parasitism within angiosperms.


SESSION 4 OCC, room B 114-115

CONTRIBUTED PAPERS: ASPT / Systematics Section, BSA - Monocots other than Orchidaceae or Poaceae

Presiding: Thomas J. Givnish, Department of Botany, University of Wisconsin, Madison, WI 53706. Tele: 608-262-5718, E-mail: givnish@facstaff.wisc.edu

8:15 4-1 GRANT1, JASON R.*; AND LENA STRUWE2. 1Université de Neuchâtel, Neuchâtel, Switzerland; and 2The New York Botanical Garden, Bronx. Generic level relationships in the Tillandsioideae (Bromeliaceae) based on plastid locus matK cpDNA sequences and traditional morphological characters.

8:30 4-2 BLATTNER, FRANK R.*; DIRK FISCHER; NIKOLAI FRIESEN; SVEN POLLNER; AND KONRAD BACHMANN. Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany. Molecular markers in Allium, range of application and taxonomic consequences.

8:45 4-3 ALLEN, GERALDINE A.*; DOUGLAS E. SOLTIS; AND PAMELA S. SOLTIS. University of Victoria, Victoria, B.C., Canada; Washington State University, Pullman. Phylogeny, biogeography and character evolution of Erythronium (Liliaceae).

9:00 4-4 CAMERON, KENNETH M.*; AND CHENGXIN FU. The New York Botanical Garden, Bronx; Zhejiang University, Hangzhou, China. Untangling the catbriers: phylogenetic studies in Smilacaceae.

9:15 4-5 LES, DONALD H.*; DANIEL J. CRAWFORD; ELIAS LANDOLT; JOHN D. GABEL; AND REBECCA T. KIMBALL. University of Connecticut, Storrs; The Ohio State University, Columbus; Geobotanisches Institut ETH, Zürich, Switzerland. Phylogenetic relationships in Lemnaceae Dumortier, the duckweed family.

9:30 4-6 CRAWFORD, DANIEL J.*; DONALD H. LES; ELIAS LANDOLT; REBECCA T. KIMBALL; AND JOHN D. GABEL. The Ohio State University, Columbus, University of Connecticut, Storrs; Geobotanisches Institut ETH, Zürich, Switzerland. A phylogenetic study of the genus Wolffiella (Lemnaceae).

9:45 4-7 LEWIS, CARL E.*; AND JEFF J. DOYLE. Cornell University, Ithaca, NY. Low-copy nuclear genes for phylogenetic research in the palm family.

10:00 BREAK

10:15 4-8 ASMUSSEN, CONNY B.*; MARK W. CHASE; AND MICHAEL ZANIS. Royal Botanic Gardens, Kew, UK. Nuclear 26S rDNA and systematics of monocotyledons.

10:30 4-9 GIVNISH, THOMAS J.*; KENDRA C. MILLAM; AND KENNETH J. SYTSMA. University of Wisconsin, Madison. Phylogenetic relationships and evolutionary patterns in Bromeliaceae based on ndhF sequence variation.

10:45 4-10 ROALSON, ERIC H. Rancho Santa Ana Botanic Garden and The Claremont Graduate University, Claremont, CA. Molecular phylogenetic studies in Carex section Acrocystis (Cyperaceae): evidence from nuclear Adh and ITS genic regions.

11:00 4-11 WILSON, BARBARA L.*; RICHARD BRAINERD; MANUELA HUSO; KELI KUYKENDALL; DANNA LYTJEN; BRUCE NEWHOUSE; NICK OTTING; AND PETER ZIKA. Oregon State University, Corvallis. The Carex Working Group, an example of cooperative taxonomy.

11:15 4-12 PRINCE, LINDA M.*; AND W. JOHN KRESS. Smithsonian Institution, Washington, DC. Phylogenetic relationships among genera of the prayer plant family (Marantaceae) based on chloroplast DNA sequence data.

11:30 4-13 GIVNISH, THOMAS J.*; J. CHRISTOPHER PIRES; SEAN W. GRAHAM; KENDRA C. MILLAM; THOMAS B. PATTERSON; TIMOTHY M. EVANS; ERIC H. ROALSON; AND KENNETH J. SYTSMA. University of Wisconsin, Madison; University of Alberta, Edmonton, Canada; Rancho Santa Ana Botanical Garden, Claremont, CA; Hope College, Holland, MI. Phylogeny of the monocotyledons based on ndhF sequence variation, with special emphasis on relationships within and among commelinoids, lilioids, and asparagoids.


SESSION 5 OCC, A 107-109

CONTRIBUTED PAPERS: Paleobotanical Section, BSA - Isabel Cookson Student Award session

Presiding: WILSON A. TAYLOR, Department of Biology, University of Wisconsin-Eau Claire, Eau Claire, WI 54702-4004, Tele: 715-836-3176, E-mail: taylorwa@uwec.edu.

8:40 5-1 JAMES F. BASINGER,University of Saskatchewan, Saskatoon, Canada. Introduction and comments from the Chair.

8:45 5-2 NAGALINGUM, NATHALIE S.*, ANDREW N. DRINNAN, STEPHEN MCLOUGHLIN, and RICHARD LUPIA. The University of Melbourne, Parkville, Victoria, Australia, and University of Oklahoma, Norman. Patterns of pteridophyte evolution and diversification in the Cretaceous of southern Gondwana.

9:00 5-3 MITRA, MADHUMI * and JAMES E. MICKLE. University of Maryland Eastern Shore, Princess Anne, and North Carolina State University, Raleigh. Resolving the controversy of the Tar Heel Formation of the eastern United States.

9:15 5-4 SCHERER, JACQUELINE*, GARLAND R. UPCHURCH, JR., GREG H. MACK, and MARGARET J. KNAUS. Southwest Texas State University, San Marcos, and New Mexico State University, Las Cruces. Foliar physiognomic estimates of climate for the latest Cretaceous: comparative sensitivity to transfer function.

9:30 5-5 HERMSEN, ELIZABETH J.*, WILLIAM L. CREPET, and KEVIN C. NIXON. Cornell University, Ithaca, NY. A new fossil saxifragoid from the Upper Cretaceous of New Jersey.

9:45 5-6 HERNANDEZ-CASTILLO, GENARO RODRIGO. Ohio University, Athens. Use of multivariate analysis in reconstructing fossil conifers.

10:00 BREAK

10:15 5-7 TOMESCU, ALEXANDRU MIHAIL FLORIAN. Ohio University, Athens. The seed fern Lyginopteris in the Mississippian of North America.

10:30 5-8 SCHWAB, HEIDI C.*, RUTH A. STOCKEY, and CHARLES E. SCHWEGER. University of Alberta, Edmonton, Canada. Ovulate cones of Picea from the Lower Pliocene Ch'ijee's Bluff, Yukon Territory, Canada.

10:45 5-9 RILEY, MICHAEL G.* and RUTH A. STOCKEY. University of Alberta, Edmonton, Canada. A new aquatic angiosperm with a floating rosette of leaves from the St. Mary River Formation of southern Alberta.

11:00 5-10 DUNN, MICHAEL T. Ohio University, Athens. A new species of Pachytesta from the Upper Pennsylvanian Finis Shale of Texas.

11:15 5-11 LITTLE, STEFAN A.* and RUTH A. STOCKEY. University of Alberta, Edmonton, Canada. Reconstructing aquatic angiosperms from the Middle Eocene Princeton chert: Decodon allenbyensis.


SESSION 6 OCC, C 125-126.

CONTRIBUTED PAPERS: ABLS / Bryological and Lichenological Section, BSA - Bryophyte systematics

Presiding: Jeffrey G. Duckett, School of Biological Sciences, Queen Mary & Westfield College, London, E1 4NS, UK. Tele: 020 7882 3294, E-mail: j.g.duckett@qmw.ac.uk

9:00 6-1 CHRISTIANSON, MICHAEL L.* and STEPHEN H. DUFFY. University of Kansas, Lawrence. Salicylate-regulation of development in the moss, Funaria hygrometrica.

9:15 6-2 CRANDALL-STOTLER, BARBARA. Southern Illinois University, Carbondale. Biology and evolution of the Fossombroniineae.

9:30 6-3 STOTLER, RAYMOND E.*, JAMES R. BRAY, JR. and D. CHRISTINE CARGILL. Southern Illinois University, Carbondale. Typifications in the genus Fossombronia (Marchantiophyta) Problems and solutions.

9:45 6-4 WHEELER, JOHN A. University of California, Berkeley. A phylogenetic analysis of the genus Riccia (Marchantiales): Volatile morphology that is not reflected in the underlying genetic history.

10:00 BREAK

10:15 6-5 LA FARGE, CATHERINE. University of Alberta, Edmonton, Canada. The circumscription of the Dicranaceae (Bryopsida), with special emphasis on the subfamily Dicranoideae based on cpDNA: trnL and rps4.

10:30 6-6 COX, CYMON J.* and TERRY A. J. HEDDERSON. Duke University, Durham, NC and University of Cape Town, Rondebosch, South Africa. Molecular phylogenetic analyses of the Bryaceae (Bryales, Musci).

10:45 6-7 GOFFINET, BERNARD* and A. JONATHAN SHAW. University of Connecticut, Storrs, and Duke University, Durham, NC. Phylogenetic inferences in the Orthotrichoideae based on trnL-F and rps4 (cpDNA) sequence data.

11:00 6-8 DE LUNA, EFRAÍN*, HIROMI TSUBOTA, DOLORES GONZÁLEZ, SACHIKO MAEDA, HIROYUKI AKIYAMA, TOMOTSUGU ARIKAWA, RAY TANGNEY, CYMON J. COX, ANGELA E. NEWTON, KEIKO KOSUGE, MASANOBU HIGUCHI and HIRONORI DEGUCHI. Instituto de Ecología, Xalapa, Mexico. An overview of phylogenetic relationships among families of pleurocarps: Implications from variation in 165 rbcL sequences.

11:15 6-9 NEWTON, ANGELA E.* and CYMON J. COX. Natural History Museum, London, England. Evolutionary radiation of the pleurocarpous mosses: Phylogenetic analyses incorporating morphological characters with rbcL, rps4 and trnL-F sequence data.

11:30 6-10 SASTRE-DE JESÚS, INÉS*, DOLORES GONZÁLEZ and EFRAÍN DE LUNA. University of Puerto Rico, Mayagüez, PR. Phylogenetic position of the Neckeraceae (Musci) based on rbcL gene sequences.


SESSION 7 OCC, C 124

CONTRIBUTED PAPERS: AFS / Pteridological Section, BSA

Presiding: W. CARL TAYLOR, Department of Botany, Milwaukee Public Museum, Milwaukee, WI 53233. Tele: 414-278-2760, E-mail: ct@mpm.edu.

9:00 7-1 CRANFILL, RAYMOND. University of California, Berkeley. Has ecological specialization driven a fundamental phylogenetic split in the Polypodiales?

9:15 7-2 HAUFLER, C. H.1*, T. HILDEBRAND1, P. HAMMOND2, J. P. THERRIEN1, AND C. WALTERS1. 1University of Kansas, Lawrence, and 2University of California Botanical Garden, San Francisco. New insights concerning the origin of Polypodium scouleri and its ongoing hybridization with sympatric congeners.

9:30 7-3 SMITH, ALAN R.1 *, HARALD SCHNEIDER1, BARBARA S. PARRIS2, CHRISTOPHER H. HAUFLER3, TOM A. RANKER4, JAMES P. THERRIEN3, AND JENNIFER M. O. GEIGER4. 1University of California, Berkeley; 2Fern Research Foundation, Bay of Islands, New Zealand; 3University of Kansas, Lawrence; and 4University of Colorado, Boulder. Phylogeny of Grammitidaceae and Polypodiaceae inferred from two large data sets: rbcL and morphology.

9:45 7-4 SÁNCHEZ-BARACALDO, PATRICIA. University of California, Berkeley, CA. A recent radiation of Neotropical fern genera in páramo ecosystems.

10:00 BREAK

10:15 7-5 Werth, Charles R.1, Carol L. Kelloff2, Kimberly L. Sciarretta3, and Erin Potter Arbuckle4. 1Texas Tech University, Lubbock, 2National Museum of Natural History, Washington, DC, 3University of Virginia, Richmond, 4College of William and Mary, Williamsburg, VA. Geographic patterns of variation in Athyrium of Eastern North America: Evidence for a hybrid zone.

10:30 7-6 MEHLTRETER, KLAUS* AND MÓNICA PALACIOS-RIOS. Instituto de Ecología, A.C, Veracruz, México. Phenological studies on Acrostichum danaeifolium Langsd. et Fisch. (Pteridaceae, Pteridophyta) on a Caribbean mangrove site of Mexico.

10:45 7-7 NOTIS, CHRISTINE. Iowa State University, Ames. Sperm longevity and swimming distance in ferns.

11:00 7-8 SCHUETTE, S.W. 1*, A.R. MADEN1, D.P. WHITTIER2, AND K.S. RENZAGLIA1. 1Southern Illinois University, Carbondale and 2Vanderbilt University, Nashville, TN. Ultrastructure of the spermatozoid of Diphasiastrum digitatum.

11:15 7-9 TAYLOR, W. CARL1* AND SARA B. HOOT2. 1Milwaukee Public Museum, Milwaukee, WI and 2University of Wisconsin, Milwaukee. Evolutionary relationships and biogeography of Isoetes based on nucleotide sequences.

11:30 7-10 HOOT, SARA B. 1*, W. CARL TAYLOR2, AND E. WAGNER1. 1University of Wisconsin, Milwaukee, and 2Milwaukee Public Museum, Milwaukee, WI. Species delimitation and hybrid origins in North American Isoëtes based on LEAFY intron data.


SESSION 8 OCC, A 103-104

CONTRIBUTED PAPERS: Developmental and Structural Section, BSA - Development in primitive tracheophytes

Presiding: SCOTT D. RUSSELL, Department of Botany and Microbiology, University of Oklahoma, Norman, OK 73019, Tele: 405-325-6234, E-mail: srussell@ou.edu

10:00 8-1 FLOYD, SANDRA K.* AND WILLIAM E. FRIEDMAN. University of Colorado, Boulder. Endosperm development in Amborella trichopoda: implications for the origin and early evolution of angiosperm reproductive biology.

10:15 8-2 CARLQUIST, S. AND EDWARD L. SCHNEIDER.* Santa Barbara Botanic Garden, Santa Barbara, CA. Anatomical studies of Amborella.

10:30 8-3 DOUST, ANDREW, N. L. University of Missouri-St Louis, St Louis. Floral morphology and development in Winteraceae.

10:45 BREAK

11:00 8-4 KANTZ, KATHERINE E.* AND SHIRLEY C. TUCKER. Grand Valley State University, Allendale, MI and University of California, Santa Barbara. Floral development of Chrysobalanus icaco L. and Licania michauxii Prance (Chrysobalanaceae): stamen number and formation of the gynobasic style.

11:15 8-5 SCHNEIDER, HARALD* AND KATHLEEN M. PRYER. University of California, Berkeley and The Field Museum, Chicago. Spore morphology of heterosporous ferns and its possible implications for understanding the evolution of the seed habit.

11:30 8-6 RUSSELL, SCOTT D. 1 *, ZHAOJIE ZHANG 1, HUILING XU2, PREM BHALLA2, AND MOHAN B. SINGH2. 1University of Oklahoma, Norman and 2University of Melbourne, Parkville, Australia. Plumbago zeylanica sperm isolation, collection and cDNA library characterization.