Noon-1:30 PM LUNCHEON MEETING: American Journal of Botany Editorial Board. NIKLAS, KARL J. (editor-in-chief), presiding.


Presiding: HERR, JOHN M., JR. Department of Biological Sciences, University of South Carolina, Columbia, SC 29208. (803) 777-8110, HERR@BIOL.SC.EDU.

CONTRIBUTED PAPERS: Leaves: structure and development. Developmental and Structural section.

1:00 BSA 12.1 KIM, INSUN. Keimyung University, Korea. - Foliar structural differentiation of Salsola komarovii (Chenopodiaceae).

1:15 BSA 12.2 SOROS, CONNIE L.* AND NANCY G. DENGLER. University of Toronto, ON. Ontogenetic derivation of PCA and PCR tissues in C3 and C4 Cyperaceae and comparisons with the Poaceae.

1:30 BSA 12.3 MCMANUS, HILARY A.*, JAMES L. SEAGO, JR., LELAND C. MARSH, AND KAMAL I. MOHAMED. SUNY at Oswego, New York. Structural comparison of three Typha species: Typha glauca and its putative parental species, T. latifolia and T. angustifolia.

1:45 BSA 12.4 OWENS, SHIRLEY A. Michigan State University, East Lansing. Secondary pulvini in the leaves of Cercis canadensis L. (Fabaceae).

2:00 BREAK

2:15 BSA 12.5 BARTHLOTT, WILHELM AND CHRISTOPH NEINHUIS.* Botanisches Institut und Botanischer Garten, Bonn. The Lotus-Effect: a paradigm for the use of a natural design for technical application.

2:30 BSA 12.6 HERR, JOHN M., JR. University of South Carolina, Columbia. A revision of the telome theory for the origin of megaphylls.

2:45 BSA 12.7 CHRISTIANSON, MICHAEL L. University of Kansas, Lawrence. The mosses Funaria hygrometrica and Ceratodon purpureus use different molecules to regulate growth of adjacent protonema.

3:00 BSA 12.8 LEE, DAVID W. Florida International University and Fairchild Tropical Garden, Miami. Red pigment distribution in leaves of tropical plants.


4:00 BSA 12.9 COOKE, TODD J. University of Maryland, College Park. Introduction.

4:05 BSA 12.10 KAPLAN, DONALD R. University of California, Berkeley. The Science of Plant Morphology: man bites (phylogenetic) dogma.

5:00 PM MIXER: Developmental and Structural section.

5:30 PM AUCTION: Developmental and Structural section.


Presiding: FORSETH, IRWIN N.

SYMPOSIUM: Consequences of plant responses to spatial and temporal

heterogeneity. Organized by FORSETH, IRWIN N. and WAIT, D. ALEXANDER, Department of Zoology, University of Maryland, College Park, MD 20742, 301/405-1629; e-mail: or Joint session with the Ecological Society of America (Vegetation Section).

1:00 BSA 13.1 FORSETH, IRWIN N. University of Maryland, College Park. Opening Comments.

1:10 BSA 13.2 STELTZER, HEIDEMARIE* and WILLIAM D. BOWMAN. University of Colorado, Boulder. Influence of plant species on community structure through the control of spatial heterogeneity in nitrogen cycling in the alpine tundra.

1:35 BSA 13.3 WAIT, D. ALEXANDER*, IRWIN N. FORSETH and BRENDA B. CASPER. University of Maryland, College Park and University of Pennsylvania, Philadelphia. Spatial and temporal heterogeneity effects on interspecific interactions, drought tolerance, and population structure of a semi-desert perennial.

2:00 BSA 13.4 GEBAUER, RENATE L. E.*, SUSANNE SCHWINNING and JAMES R. EHLERINGER. University of Utah, Salt Lake City. The responses of desert plant functional types to rainfall events at different times of the year - a mechanism for community change?

2:25 BSA 13.5 SCHWINNING, SUSANNE*, RENATE L. E. GEBAUER and JAMES R. EHLERINGER. University of Utah, Salt Lake City. The role of inter-annual rainfall variation in structuring communities of desert plants - conclusions drawn from a simulation study.

2:50 BREAK

3:05 BSA 13.6 JONES, H. ROBERT*1, PAUL P. MOU1, and ROBERT J. MITCHELL2. 1Virginia Tech, Blacksburg, and 2Joseph W. Jones Ecological Research Center, Newton, Georgia. Spatial heterogeneity of soil resources in early successional forests: effects of different disturbances and responses of plants.

3:30 BSA 13.7 JOBBAGY, ESTEBAN. G.* WILLIAM T. POCKMAN and ROBERT B. JACKSON. University of Texas, Austin. Root and soil nutrient distributions: global patterns modified by local variability.

4:00 BSA 13.8 BATTAGLIA, LORETTA. L.* and REBECCA R. SHARITZ. University of Georgia Savannah River Ecology Laboratory, Aiken, SC. Hurricane disturbance increases spatial complexity of the environment: implications for regeneration patterns in a floodplain forest community.

4:25 BSA 13.9 GRIME, J. PHIL* and SARAH M. BUCKLAND. The University of Sheffield, UK. Immediate, filter and founder effects of plant diversity on ecosystem function and responses to extreme events.

4:55 BSA 13.10 Concluding Comments


POSTER SESSION. Genetics Section. Posters will be available for viewing from 1:00 p.m. to 5:00 p.m. Authors will be available to discuss their presentation from 1:30 p.m. - 2:30 p.m.

BSA 14.1 ALLPHIN, LOREEN AND MICHAEL D. WINDHAM.* Brigham Young University, Provo, UT, and University of Utah, Salt Lake City. Genetic variability and genetic drift in the rare Kachina daisy (Erigeron kachinensis) from southeastern Utah.

BSA 14.2 CARROMERO, WILLIAM*, JAMES D. ACKERMAN, AND RAYMOND L. TREMBLAY. University of Puerto Rico, San Juan, and Humacao University College, PR. Genetic diversity for Lepanthes (Orchidaceae) species with widespread and restricted geographical distribution within the island of Puerto Rico.

BSA 14.3 DAWLEY, ROBERT*, JESSICA A. CHINAULT, JOHN J. KERRIGAN, MEGAN M. DEGREGORIO, AND MARY B. FIELDS. Ursinus College, Collegeville, PA. The genomes of rapid-cycling Brassicas are no smaller than those of their wild-type progenitors.

BSA 14.4 FIELDS, MARY B.*, JENNIFER M. MCGEE, JENNIFER LATTANZE, LAURA A. BROUSE, AND ROBERT M. DAWLEY. Ursinus College, Collegeville, PA. Genome size in Mimulus (Schrophulariaceae): reduction following polyploidy.

BSA 14.5 KEELER, KATHLEEN H. University of Nebraska-Lincoln. Comparison of cytotypic reproduction in Andropogon gerardii (Poaceae) populations of mixed cytotype.

4:00 PM BUSINESS MEETING: Genetics Section. WILSON, KENNETH G. presiding


Presiding: MAPES, GENE K., Department of Environmental and Plant Biology, Ohio University, Athens, OH 45701-2979, Tele: (614) 593-9358 ext. 1126, Fax: (614) 593-0482, E-mail: <>.

CONTRIBUTED PAPERS. Paleobotanical section.

1:00 BSA 15.1 GENSEL, P. G.* AND S-G HAO. University of North Carolina, Chapel Hill and University of Beijing, P. R. China. Some new plant discoveries from the Lower Devonian Posongchong Formation, S. E. Yunnan Province, P. R. China.

1:15 BSA 15.2 COOK, MARTHA E.* AND WILLIAM E. FRIEDMAN. University of Colorado, Boulder. Development of tracheids in the basal extant vascular plant Huperzia lucidula (Lycopodiaceae): Implications for the early evolution of plant water-conducting cells.

1:30 BSA 15.3 CRESSLER, WALTER. University of Pennsylvania, Philadelphia. A diverse Late Devonian flora preserved in a fluvial setting, north-central Pennsylvania, U.S.A.

1:45 BSA 15.4 GASTALDO, ROBERT A.* AND WILLIAM A. DIMICHELE. Auburn University, AL and Smithsonian Institution, Washington, DC. Nightmare on Fern Street: An analysis of marattialean foliage from the Pennsylvanian and Permian of north-central Texas.

2:00 BSA 15.5 STOCKEY, RUTH A.* AND SELENA SMITH. University of Alberta, Edmonton. A new Millerocaulis (Osmundaceae) from the Lower Cretaceous of northern California.

2:15 BREAK

2:30 BSA 15.6 MAPES, GENE* AND GAR W. ROTHWELL. Ohio University, Athens. A new conifer-like coniferophyte in the Upper Pennsylvanian of Kansas.

2:45 BSA 15.7 TAYLOR, EDITH L., THOMAS N. TAYLOR*, RUBÉN CÚNEO, ANA ARCHANGELSKY, AND HANS KERP. University of Kansas, Lawrence, Museo Paleontológico Egidio Feruglio, Trelew (Chubut), Argentina, and Westfälische Wilhelms-Universität, Münster, Germany. Cupulate reproductive organs from the Triassic of the Shackleton Glacier area, Antarctica.

3:00 BSA 15.8 TAYLOR, EDITH L.*, CARLY M. HARTER, AND THOMAS N. TAYLOR. University of Kansas, Lawrence. Plant-animal interactions in the Triassic of Antarctica.

3:15 BSA 15.9 ROTHWELL, GAR W.*, HEATHER D. ADDY, RUTH A. STOCKEY, AND RANDOLPH S. CURRAH. Ohio University, Athens, and University of Alberta, Edmonton. Mycorrhizal associations of the Middle Eocene taxodiaceous conifer Metasequoia milleri.

3:30 BREAK

3:45 BSA 15.10 GANDOLFO, MARIA A.*, KEVIN C. NIXON, DENNIS W. STEVENSON, AND WILLIAM L. CREPET. Cornell University, Ithaca, NY and New York Botanical Garden, Bronx. Species diversity of Triuridaceae fossil flowers from the Late Cretaceous of New Jersey.

4:00 BSA 15.11 MANCHESTER, STEVEN R. University of Florida, Gainsville. Cornaceae in Paleocene floras of the Rocky Mountains and Great Plains.

4:15 BSA 15.12 MANCHESTER, STEVEN R.* AND YUFEI WANG. University of Florida, Gainsville, and Chinese Academy of Sciences, Beijing, P.R.China. Systematic reevaluation of so-called Astronium (Anacardiaceae) fruits from the Eocene of western North America and Miocene of eastern Asia.

4:30 BSA 15.13 PIGG, KATHLEEN B.* AND STEVEN R. MANCHESTER. Arizona State University, Tempe, and University of Florida, Gainesville. Silicified heptalocular fruits from the Middle Miocene Yakima Canyon flora, central Washington state.


Presiding Wallace, James W. Department of Biology, Western Carolina University, Cullowhee, NC 28723.

CONTRIBUTED PAPERS: Phytochemistry. Phytochemical Section.

3:00 BSA 16.1 MARTIN, SUSAN S.* AND JOHNNY M. THOMAS II. USDA-ARS and Colorado State University, Fort Collins. Nutrient deprivation affects glucosinolate composition of Sinapis alba..

3:15 BSA 16.2 Wallace, James W. Western Carolina University, Cullowhee, NC. Phylogenetic implications of flavonoids of the Hymenophyllaceae: Trichomanes.

3:30 BSA 16.3 Johnson, Emanuel L. USDA ARS Weed Science Laboratory, Beltsville, MD. Ecgonine derived alkaloids in juvenile tissue of E. c. var. coca and E. n. var. ovogranatense.

3:45 PM BUSINESS MEETING: Phytochemical section. MARTIN, SUSAN S., presiding.

4:00 PM BUSINESS MEETING: Pteridological section. TAYLOR, W. CARL, presiding.


CONTRIBUTED PAPERS: Molecular Systematics. Systematics Section; joint session with the American Society of Plant Taxonomists session 3.


CONTRIBUTED PAPERS: Morphology, Anatomy. Systematics Section; joint session with the American Society of Plant Taxonomists session 4.

5:20 PM BUSINESS MEETING: Systematics section. KRON, KATHLEEN A., presiding.



SPECIAL LECTURE: The genetic consequences of polyploidy: Keys to the success of polyploids in nature? Genetics Section.

7:30 BSA 19.1 WILSON, KENNETH G. Miami University, Oxford, OH. Introduction.

7:40 BSA 19.2 SOLTIS, PAMELA S. Washington State University, Pullman. The genetic consequences of polyploidy: Keys to the success of polyploids in nature?

6:00 PM BUSINESS MEETING: Developmental and Structural section. FRIEDMAN, WILLIAM E., presiding.

6:00 PM MIXER: Paleobotanical Section.

7:00 PM DINNER and AUCTION: Paleobotanical Section.