Presiding: HORNER, HARRY T. Department of Botany and Bessey Microscopy Facility, Iowa State University, Ames, IA 50011-1020. 515-294-8635,

CONTRIBUTED PAPERS: Microscopic structure. Developmental and Structural section.

8:45 BSA 1.1 GHOSH, NABARUN*, A. CHATTERJEE, AND DON W. SMITH. University of North Texas, Denton, and University of Calcutta, India. Regeneration of Albizia lebbeck via somatic embryogenesis in suspension culture and study on the karyotype and growth behavior.

9:00 BSA 1.2 MADDEN, JAREN I.*, CYNTHIA S. JONES, AND CAROL A. AUER. University of Connecticut, Storrs. Structural comparison of somatic embryo development in the hybrid Pelargonium x hortorum Bailey and three ancestral species.

9:15 BSA 1.3 WILLIAMS, GEOFFREY L.* AND KAREN L. KLOMPARENS. Michigan State University, East Lansing. Picea pungens pollen, a three dimensional exploration.

9:30 BSA 1.4 SMITH, MARIANNE B*, HARRY T HORNER, AND REID G PALMER. Iowa State University, Ames. A developmental microscopic study of a Chinese wild-type soybean line exhibiting male sterility.

9:45 BSA 1.5 MATTSON, SARENA M.* AND JEFFREY S. CARMICHAEL. University of North Dakota, Grand Forks. Reproductive biology of leafy spurge (Euphorbia esula L.): pollen tube pathway and breeding system analysis.

10:00 BREAK

10:15 BSA 1.6 EVANS, LANCE S. Manhattan College, Bronx, NY. Growth and cell population kinetics during development of roots of Pisum sativum.

10:30 BSA 1.7 RUSSELL, SCOTT D.*, ZHAOJIE ZHANG, AND HUI-QIAO TIAN. University of Oklahoma, Norman. Collection and characterization of male gametes of Plumbago and Nicotiana.

10:45 BSA 1.8 PAOLILLO, DOMINICK J. Cornell University, Ithaca, NY. The outer epidermal wall, extension growth and organ support.

11:00 BSA 1.9 HORNER, HARRY T.* AND NELS R. LERSTEN. Iowa State University, Ames. A survey of types and distribution of calcium oxalate crystals in leaves of Prunus sensu lato (Rosaceae).

11:15 BSA 1.10 OWENS, SHIRLEY A.*, JOANNE H. WHALLON, AND STANLEY L. FLEGLER. Michigan State University, East Lansing. The formation of calcium crystals during fixation of sectioned pulvinus tissue.


POSTER SESSION. Developmental and Structural section. Posters will available for viewing from 9 a.m. to 5 p.m. Authors will be available to discuss their presentations from 3:00 p.m. to 4:00 p.m.

BSA 2.1 OWEN, JR., T. PAGE* AND KRISTEN A. LENNON1. Connecticut College, New London, 1Current address: University of California, Riverside. Structure and development of the pitchers from the carnivorous plant Nepenthes alata.

BSA 2.2 NICHOL, SUSAN A.* AND WENDY KUHN SILK. University of California, Davis. Effect of growth zones on pH in the rhizosphere.

BSA 2.3 BARONE LUMAGA, M. R.*, J. E. MICKLE, AND P. DE LUCA. Universita' di Napoli Federico II, Napoli, Italy; North Carolina State University, Raleigh. Stomatal and epidermal morphology in developing axes of Psilotum nudum.

BSA 2.4 LEBKUECHER, JEFFERSON G.*, KURT A. HALDEMAN, CHRISTINE E. HARRIS, SONIA L. HOLZ, SARY A. JOUDAH, AND DARCY A. MINTON. Austin Peay State University, Clarksville,TN. Development of photosystem-II activity during irradiance of etiolated Helianthus (Asteraceae) seedlings.

BSA 2.5 WENZEL, CAROL L. AND THOMAS L. ROST.* University of California Davis. Spiral growth in Arabidopsis thaliana roots.

BSA 2.6 TONG, KATHLEEN L.* AND THOMAS L. ROST. University of California Davis. The relationship of T-divisions to root apical organization patterns in Trifolium repens.

BSA 2.7 LUM, KARIN T., MARY PARENT, PHILIP D. REID*, AND IRWIN P. TING. Smith College, Northampton, MA. Regulation of CAM induction in Mesembryanthemum crystallinum by photoperiod and salt stress.

BSA 2.8 CARMICHAEL, JEFFREY S.* AND SARENA M. MATTSON. University of North Dakota, Grand Forks. Ovule, embryo, and endosperm development in leafy spurge (Euphorbia esula L.).

BSA 2.9 BRIAND, CHRISTOPHER H.*, ELICHIA A. VENSO, AND BARBARA A. WAINWRIGHT. Salisbury State University, MD. Axis rotation in allometric analysis: Which regression should I use?

BSA 2.10 RANDALL, PAULA F.*, JOHN S. GARDNER, AND DANIEL J. FAIRBANKS. Brigham Young University, Provo, UT. SEM analysis of the seed surface morphologies of two varieties of Chenopodium quinoa.

BSA 2.11 LEONG, LAUREL L. Y.*, KENNETH G. WILSON, AND NANCY L. SMITH-HUERTA. Miami University, Oxford, OH. A gene expression comparison of wild-type sepals and petals of Clarkia tembloriensis (Onagraceae) and the sepaloid petals of the crinkled petal mutant.


Presiding: GALEN, CANDACE. Division of Biological Sciences, University of Missouri, Columbia, MO 65211, 573/882-4832, email:

CONTRIBUTED PAPERS: Pollination, Breeding Systems, and Seed Ecology. Ecological section.

8:00 BSA 3.1 MARR, DEBORAH L.* AND DELPH, LYNDA F. Indiana University, Bloomington. Spatial and temporal dynamics of a pollinator-transmitted pathogen, Microbotryum violaceum, and its long-lived host, Silene acaulis.

8:15 BSA 3.2 RATHCKE, BEVERLY J. University of Michigan, Ann Arbor. After the hurricane: pollen- and resource-limitation of fruit set in the bird-pollinated, endemic Bahama swamp-bush, Pavonia bahamensis Hitchc. (Malvaceae).

8:30 BSA 3.3 SAWYER, NEIL W.* AND ANDERSON, GREGORY J. University of Connecticut, Storrs. Reproductive biology of the carrion-flower, Smilax herbacea (Smilacaceae).

8:45 BSA 3.4 LANGE, RONALD S.* AND SCOTT, PETER E. Indiana State University, Terre Haute. Effectiveness of hummingbirds and bees as pollinators of three Penstemon species.

9:00 BSA 3.5 FRANKLIN, CAROLEE J.* AND SNOW, ALLISON A. Ohio State University, Columbus. Sexual reproduction and seed set variation among populations of federally endangered Trifolium stoloniferum.

9:15 BSA 3.6 SCOBELL, SUMMER A.* AND SCOTT, PETER E. Indiana State University, Terre Haute. Nectar production and hummingbird visitation of claret cup cactus along an elevation gradient.

9:30 BSA 3.7 DUDLE, DANA A. Indiana University, Bloomington. Ecological and morphological factors contributing to maintenance of male-sterility in gynodioecious populations of Lobelia siphilitica (Lobeliaceae).

9:45 Break

10:00 BSA 3.8 GALEN, CANDACE. University of Missouri, Columbia. Why do April showers bring May flowers? Physiological costs of flower size in the alpine wildflower, Polemonium viscosum.

10:15 BSA 3.9 FAIVRE, AMY E. University of Arizona, Tucson . Variation in incompatibility system and floral morphology of three heterostylous species in Rubiaceae.

10:30 BSA 3.10 NEGRON-ORTIZ, VIVIAN. Fairchild Tropical Garden, Miami, FL, and Miami University, Oxford, OH. Why is seed set very low in the rare cactus, Opuntia spinosissima, in the Florida Keys?

10:45 BSA 3.11 WINSOR, JAMES A.*, STEPHENSON, ANDREW G. AND PERETZ, SHANI. The Pennsylvania State University, Altoona and The Pennsylvania State University, University Park. Variation in natural pollen loads and consequences for progeny vigor in a wild cucurbit species.

11:00 BSA 3.12 CIPOLLINI, MARTIN L.*, SANDERS, ANNA K. AND LEVEY, DOUGLAS J. Berry College, Mount Berry, GA , and University of Florida, Gainesville . Inter- and intra-specific variation in glycoalkaloid content of vertebrate dispersed Solanum fruits.

11:15 BSA 3.13 HIDAYATI, SITI*, BASKIN, JERRY, M. AND BASKIN, CAROL C. University of Kentucky, Lexington, KY. A comparative study of seed dormancy and germination in three species of Lonicera (Caprifoliaceae).

11:30 BSA 3.14 CULLEY, THERESA M. The Ohio State University, Columbus. Inbreeding depression in chasmogamous and cleistogamous flowers of Viola canadensis.

11:45 BSA 3.15 GALLOWAY, LAURA F. University of Virginia, Charlottesville. Maternal and paternal environmental effects on seed characters in Campanula americana.

12:00 BSA 3.16 BRAM, MARGOT R. Rutgers University, New Brunswick, NJ. The effects of inbreeding on Amaranthus cannabinus (L.) Sauer (Amaranthaceae), a dioecious annual.


Presiding: DELESALLE, VERONIQUE A. Department of Biology, Gettysburg College, Gettysburg, PA 17325, 717/337-6153; e-mail:

CONTRIBUTED PAPERS: Population and Conservation Genetics, Molecular Evolution and Genetics, and Cytogenetics. Genetics section.

8:30 BSA 4.1 DELESALLE, VERONIQUE A.*, SUSAN J. MAZER, AND PAUL R. NEAL. Gettysburg College, PA, and University of California, Santa Barbara. Does the neighborhood matter? The effects of neighbors on gender expression in Spergularia marina (Caryophyllaceae).

8:45 BSA 4.2 MCCARTNEY, ELIZABETH A.*, JERI W. HIGGINBOTHAM, AND R. DAVID WHETSTONE. Jacksonville State University, AL. Conservation genetics of Sagittaria secundifolia (Alismataceae).

9:00 BSA 4.3 WONG, K.C.* AND M. SUN. University of Hong Kong. Population genetic structure and reproductive biology of Goodyera procera (Orchidaceae): conservation implications.

9:15 BSA 4.4 CHEN, H.* AND M. SUN. University of Hong Kong. Consensus multiplex PCR-RFLP for rapid detection of mitochondrial DNA polymorphism in Spiranthes (Orchidaceae).

9:30 BSA 4.5 SCHULTHEIS, LISA M. University of California, Berkeley. Genetic variation and population structure of Downingia bicornuta (Campanulaceae) based on microsatellite markers.

9:45 BSA 4.6 COSTICH, DENISE E.* AND ROBERT J. KOHUT. Boyce Thompson Institute for Plant Research, Ithaca, NY. The application of microsatellite (SSR) DNA marker analysis in Brassica rapa (Wisconsin Fast Plant).

10:00 Break

10:15 BSA 4.7 DOYLE, JEFF J.*, JANE L. DOYLE, JULIE C. HO, AND T. CLINT NESBITT. Cornell University, Ithaca, NY. Patterns of paralogy and concerted evolution in the leghemoglobin gene family of Glycine (Leguminosae).

10:30 BSA 4.8 RANDALL, PAULA F.* AND DANIEL J. FAIRBANKS. Brigham Young University, Provo, UT. Homologues of the Antirrhinum majus centroradialis and floricaula genes in Atriplex garrettii.

10:45 BSA 4.9 ZENG, LINGHE1 AND WM. VANCE BAIRD.* Clemson University, SC; 1 USDA/ARS Salinity Laboratory, Riverside, CA. Inheritance of antimicrotubule drug resistance in goosegrass [Eleusine indica (L.) Gaertn.].

11:00 BSA 4.10 YAMAMOTO, ETSUO AND WM. VANCE BAIRD.* Clemson University, SC. Tubulin genes and the molecular basis of antimicrotubule drug resistance in goosegrass [Eleusine indica (L.) Gaertn.].

11:15 BSA 4.11 SHEIDAI, MASOUD* AND ABDOLREZA NASIRZADEH. Shahid Beheshti University, Tehran, Iran. Karyomorphological study of Echinops species in Fars region of Iran.

11:30 BSA 4.12 HAUBER, DONALD P.* AND STEPHEN M. STACK. Loyola University, New Orleans, LA, and Colorado State University, Ft. Collins. Synapsis in an autotetraploid.


Presiding: HERENDEEN, PATRICK S. Department of Biological Sciences, The George Washington University, Lisner Hall 340, 2023 G Street NW, Washington, DC 20052, Tele: (202) 994-5828, Fax: (202) 994-6100, E-mail: <>.

CONTRIBUTED PAPERS: Isabel Cookson Student Award Session. Paleobotanical Section.

8:10 BSA 5.1 HERENDEEN, PATRICK S. Introduction and comments from the Chair.

8:15 BSA 5.2 CORDI, JENNIFER. Binghamton University, NY. Devonian vascular plant groups and the inference of macroevolutionary pattern and process: A phylogenetic comparative approach to the analysis of trends in early vascular plant evolution.

8:30 BSA 5.3 KLAVINS, SHARON D.* AND LAWRENCE C. MATTEN. Southern Illinois University, Carbondale. Elaboration of the anatomy and morphology of Wexfordia hookense, Matten.

8:45 BSA 5.4 LANTZ, TREVOR C.*, GAR W. ROTHWELL, AND RUTH A. STOCKEY. University of Alberta, Edmonton and Ohio University, Athens. A permineralized tree fern from the Lower Cretaceous (Aptian) of northern California.

9:00 BSA 5.5 SIMS, HALLIE J. University of Chicago, IL. Contrasting evolutionary trends in seed (ovule) size and megaspore volume during the late Paleozoic.

9:15 BREAK

9:30 BSA 5.6 FALDER, AMY B.*, RUTH A. STOCKEY, AND GAR W. ROTHWELL. Ohio University, Athens, and University of Alberta, Edmonton. Germinating seeds and seedlings of a Metasequoia-like taxodiaceous conifer from the Paleocene of Alberta.

9:45 BSA 5.7 AXSMITH, BRIAN J.*, THOMAS N. TAYLOR, AND EDITH L. TAYLOR. University of Kansas, Lawrence. A new cheirolepidiaceous conifer from the Lower Jurassic of North America.

10:00 BSA 5.8 DOWER, BEATRICE L.* AND RICHARD M. BATEMAN. University of Pennsylvania, Philadelphia, and Royal Botanic Garden Edinburgh, UK. Morphological and anatomical investigations of exceptionally preserved cycadophyte leaves from the Jurassic of Skye, NW Scotland.

10:15 BSA 5.9 HOPKINS, DENNIS J., JR.*, KIRK R. JOHNSON, AND CARLOS A. JARAMILLO. Denver Museum of Natural History, CO and Florida Museum of Natural History, Gainesville. Diversity and evolution of Cenozoic cycads in western North America.

10:30 BREAK

10:45 BSA 5.10 RILEY, MICHAEL G.* AND RUTH A. STOCKEY. University of Alberta, Edmonton. An aquatic broad-leaved monocot from the Upper Cretaceous (Maastrichtian) St. Mary River Formation of southern Alberta.

11:00 BSA 5.11 DERETSKY, ZINA. Yale University, New Haven, CT. A fifty million year record of insect damage in the leaves of Platanaceae.

11:15 BSA 5.12 MITRA, M.*, J. E. MICKLE, P. G. GENSEL, AND E. A. WHEELER. North Carolina State University, Raleigh, and University of North Carolina, Chapel Hill. Aquilapollenites occurs in the southeastern United States.

11:30 BSA 5.13 VAN SLUYTERS, AMY M.* AND RALPH E. TAGGART. Michigan State University, East Lansing,. Trapper Creek Palynoflora.


Presiding: REID, PHILIP D. Department of Biological Sciences, Smith College, Northampton, MA 01063; 413/585-3818, e-mail:

CONTRIBUTED PAPERS: Plant Physiology. Physiological section.

9:00 BSA 6.1 EGAN, TODD P.* AND IRWIN A. UNGAR. Ohio University, Athens. The effect of different salts of sodium and potassium on the growth of Atriplex prostrata (Chenopodiaceae).

9:15 BSA 6.2 CHRISTENSEN, TERI L.*, ERIC E. ROOS , D. A. DAVIDSON, AND ROBERT J. REINSVOLD. University of Northern Colorado, Greeley, and National Seed Storage Laboratory, Fort Collins, CO. Germination of seed after fifty years in vacuum storage.

9:30 BSA 6.3 LINDER, CECELIA C.* AND JOHN L. GALLAGHER. University of Delaware, Lewes. Tissue culture and regeneration of the giant reed, Arundo donax L.

9:45 BSA 6.4 GUSTAVSEN, KATIE A.* AND JOHN L. GALLAGHER. University of Delaware, Newark and University of Delaware, Lewes. Genetic transformation of Atriplex triangularis (Seaside Greens) using Agrobacterium tumefaciens and the p35 GUSint Ti plasmid.

10:00 Break

10:30 BSA 6.5 STRAUB, PETER F. Richard Stockton College, Pomona, NJ. Sequencing, Expression, and Characterization of a G6PDH cDNA clone from soybean (Glycine max).

10:45 BSA 6.6 LEWIS, ANN M. University of Massachusetts, Amherst. The potential for premature embolism when measuring lumen pressure with the xylem pressure probe.

11:00 BSA 6.7 WITZIG, STEPHEN B.* AND MARK A. HOLLAND. Salisbury State University, MD. A microbial symbiont used to alter the nutritional quality of plants.

11:15-12:15 BUSINESS MEETING / LUNCHEON: Physiological section. MAURICE, HENRI, presiding.


POSTER SESSION: Plant Physiology. Physiological section. Posters will be available for viewing from 9:00 AM to 5:00 PM. Authors will be available to discuss their presentations from 1:00 PM -3:00 PM.

BSA 7.1 PRUITT, PAUL. 107 Bloomingdale Ave.-Apt. 212, Wayne, PA. A Simple Unified Theory of Plant Hormones.

BSA 7.2 LEVANGIE, REBBECCA, AGATA PIKULA, PAUL STEPHENSON, AND PHILIP D. REID.* Smith College, Northampton, MA and University of Massachusetts, Amherst. Programmed cell death and oxidative metabolism in daylily flower petals.

BSA 7.3 CHOINSKI, JOHN S., JR.* AND ROBERT R. WISE. University of Central Arkansas, Conway; University of Wisconsin, Oshkosh. Photosynthesis, anthocyanins and leaf development in oaks.

BSA 7.4 AUER, CAROL A.*, A. ESTER SZTEIN, ANDERS OSTIN, AND GORAN SANDBERG. University of Connecticut, Storrs,, University of Maryland, College Park; Swedish University of Agricultural Science, Umea. Cytokinin identification, metabolism and activity in five lower plant species.

BSA 7.5 EGBERT, KATHRYN J.* AND CRAIG E. MARTIN. University of Kansas, Lawrence. Are leaf windows a morphological adaptation to increase Crassulacean acid metabolism?

BSA 7.6 SANTO, MATTHEW J., JENNIFER S. MASSA, AND T. PAGE OWEN, JR.* Connecticut College, New London. Glandular secretion and absorption in the carnivorous pitcher plant Nepenthes alata.

BSA 7.7 KOSTMAN, TODD A.* AND VINCENT R. FRANCESCHI. Washington State University, Pullman. Coordinate cell and calcium oxalate crystal growth during high capacity calcium regulation in plants.


POSTER SESSION. Phytochemical and Historical sections. Phytochemical posters (8.1, 8.2) will be available for viewing from 9 a.m. to 5 p.m. Authors will be available to discuss their presentation from 1 p.m. to 1:30 p.m.

BSA 8.1 KIPP, ERICA* AND DIANA RODRIGUEZ. The New York Botanical Garden, Bronx. Plants as a potential source of antibiotics: antibiotic properties of plants.

BSA 8.2 TOYANG, NGEH, J*, JOHN, S., JR. CHOINSKI, PATRICIA, H. DRAVES, AND DERALD SMITH. University of Central Arkansas, Conway. Antimicrobial activity of Khaya anthoteca A. Juss (Meliaceae).

BSA 8.3 CHRISTENSEN, TERI L.*, ERIC E. ROOS, AND ROBERT J. REINSVOLD. University of Northern Colorado, Greeley. Seeds of the past for the future.


CONTRIBUTED PAPERS. Pteridological section; joint session with AFS session 1.


CONTRIBUTED PAPERS: Biogeography. Systematics section; joint session with American Society of Plant Taxonomists session 1.


CONTRIBUTED PAPERS: Monocotyledons. Systematics section; joint session with American Society of Plant Taxonomists session 2.