1:30 BUSINESS MEETING. Paleobotanical section.

UPCHURCH, GARLAND P. presiding.

Presiding: LUTZONI, FRANÇOIS.

SYMPOSIUM: Bridging the gap between phylogeny and the classification of lichen-forming Ascomycetes. Part II. Bryological and Lichenological section. Joint session with ABLS session 7 and with the Canadian Botanical Association (CBA/ABC). Organized by LUTZONI, FRANCOIS, Field Museum of Natural History, Roosevelt Road at Lake Shore Drive, Chicago, IL 60605-2496.

1:00 BSA 70.1 DePRIEST, PAULA T.*, STENROOS, SOILI, IVANOVA, NATALY, and GARGAS, ANDREA. Smithsonian Institution, Washington, DC and University of Copenhagen, Denmark. Polyphyletic origins of the lichen association in the fungi: phylogenetic analyses of nuclear small subunit ribosomal DNA sequences.

1:30 BSA 70.2 GARGAS, ANDREA. University of Copenhagen, Denmark. Origins of lichen associations: parsimony and maximum likelihood analyses of two data sets.

2:00 BSA 70.3 LUTZONI, FRANCOIS*, CRODIAN, JENNIFER, and REEB, VALERIE. Field Museum of Natural History, Chicago, IL. Phylogenetic relationships of ascomycetes as revealed by the small and large subunit nuclear ribosomal DNA with emphasis on lichen-forming ascomycetes and their origin.

2:30 BSA 70.4 ERIKSSON, OVE E. Umea University, Sweden. Orders and higher taxa of Ascomycota.

3:00 Discussion

CONTRIBUTED PAPERS: Biology of Lichens. Bryological and Lichenological section. Joint session with ABLS session 8 and with the Canadian Botanical Association (CBA/ABC).

5:15 BUSINESS MEETING: Bryological and Lichenological Section.

DePRIEST, PAULA, presiding.

POSTER SESSION: The biology of Bryophytes and Lichens. Bryological and Lichenological section. Joint session with ABLS session 9 and with the Canadian Botanical Association (CBA/ABC).

Presiding: TUCKER, SHIRLEY and GRIMES, JAMES.

SYMPOSIUM: The inflorescence: New perspectives. Developmental and Structural section, BSA, and Structure and Development section, CBA/ABC. Organized by TUCKER, SHIRLEY, Department of Biological Sciences, University of California, Santa Barbara, CA 93106 (805/893-2401) <legume2@aol.com>; and GRIMES, JAMES, New York Botanical Garden, Bronx, NY 10458 (FAX 718/817-8539) <jgrimes@nybg.org>.

1:00 BSA 73.1 TUCKER, SHIRLEY, University of California, Santa Barbara. Introduction.

1:15 BSA 73.2 STEVENSON, DENNIS WM., New York Botanical Garden, Bronx. Cones and strobili, flowers and inflorescences.

1:40 Questions and Discussion

1:45 BSA 73.3 DOUGLAS, ANDREW W., Royal Botanic Gardens, Victoria, Australia. Developmental and evolutionary diversity of inflorescences forms in Proteaceae: Associations with floral morphology.

2:10 Questions and Discussion

2:15 BSA 73.4 GRIMES, JAMES, New York Botanical Garden, Bronx. Inflorescence morphology in tribes Ingeae and Acadieae (Fabaceae, Mimosoideae).

2:40 Questions and Discussion

2:45 BSA 73.5 CHARLTON, ALAN W. and POSLUSZNY, USHER*, Manchester University, UK and University of Guelph, ON. Morphological traffic between the inflorescence and vegetative shoot in helobial monocotyledons.

3:30 Questions and Discussion

3:35 BSA 73.6 HARRIS, ELIZABETH M., Eastern Illinois University, Charleston. Capitula in the Asteridae: a widespread and varied phenomenon.

4:00 Questions and Discussion

4:05 BSA 73.7 SINGER, SUSAN R.*, SOLLINGER, JOHN D., MAKI, SONJA L., MULLEN, HEIDI J., McCALL, ANDREW, and REINKE, CATHERINE. Carleton College, Northfield, MN and Clemson University, Clemson, SC. Genetic regulation of inflorescence architecture in pea.

4:30 Questions and Discussion

4:35 BSA 73.8 GRIMES, JAMES, New York Botanical Garden, Bronx. Summing up.

Presiding: FAGERBERG, WAYNE R. Department of Plant Biology, University of New Hampshire, Durham, NH 03824 (603/862-3861) <wrf@christa.unh.edu>.

CONTRIBUTED PAPERS: Development and function. Developmental and Structural Section, BSA, and Structure and Development Section, CBA/ABC.

1:30 BSA 74.1 FAGERBERG, WAYNE R.* and BORNMAN, JANET F. University of New Hampshire, Durham, and University of Lund, Sweden. Enhanced UVB radiation induces a low PAR response in Brassica napus under both high and low PAR but is it really a G.A.S.?

1:45 BSA 74.2 FOLLOSCO, MINDA P.*, HALOS, SATURNINA C., and RIVERO, GILDA C. De La Salle University, Manila, Philippines. Morphogenetic responses of leaf and stem explants of Pittosporum pentandrum (Bl.) Merr. (Pittosporaceae) cultured in vitro.

2:00 BSA 74.3 ZHANG, GUANG XIANG. Sichuan Normal University, Chengdu, Sichuan, China. Study on origin, formation pathway and development process of somatic embryos derived from bulb-scale tissue of Ornithogalum caudatum.

2:15 BSA 74.4 CHRISTIANSON, MICHAEL L.* and MARSH, IRA W. University of Kansas, Lawrence. Studies on the abscisic acid inhibition of bud formation in the moss Funaria hygrometrica.

2:30 BSA 74.5 HSIAO, SHU-CHUAN. Chung-Hsing University, Taichung, Taiwan. Conducting system in parasitic angiosperms Balanophora spp. (Balanophoraceae).

2:45 BSA 74.6 LEWIS, ANN M.* and BERG, ANDREW C. University of Massachusetts, Amherst. Embolus initiation at Thuja occidentalis L. intertracheid and crossfield pits.

3:00 BSA 74.7 KUO-HUANG, LING-LONG*, JONG, YIIN-JENG, and WU, CHI-CHIH. University of Taiwan, Taipei, Taiwan. The formation of calcium oxalate and calcium carbonate crystals in Morus australis at different levels of calcium and strontium supply.

3:15 BSA 74.8 FERNANDO, DANILO* and OWENS, JOHN N. University of Victoria, BC. Calcium localization in Douglas-fir ovules (Pseudotsuga menziesii).

3:30 BSA 74.9 CAESAR, J. CARTEY, University of Guyana, Georgetown. Effect of simulated shade-light quality on plastochron parameters of Populus tremuloides seedlings.

Presiding: PIGLIUCCI, MASSIMO and SCHLICHTING, CARL.

SYMPOSIUM: Genetics of adaptive phenotypic plasticity. Part II. Ecological and Genetics sections, BSA. Joint session with Canadian Botanical Association (CBA/ABC). Organized by PIGLIUCCI, MASSIMO, Departments of Botany and Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996 (423/974-6221) <pigliucci@utk.edu>; and SCHLICHTING, CARL, Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT 06269 (860/486-4056) <schlicht@uconn.edu>.

1:45 BSA 75.1 BONSER, STEPHEN P.* and AARSSEN, LONNIE W., Queen's University, Kingston, ON. Plasticity and adaptive allometry of meristem allocation in herbaceous plants.

2:15 BSA 75.2 WINN, ALICE, Florida State University, Tallahassee. Measuring the evolutionary costs of phenotypic plasticity.

2:45 BSA 75.3 DUDLEY, SUSAN, McMaster University, Hamilton, ON. Testing adaptive plasticity hypotheses.

3:15 BSA 75.4 SULTAN, SONIA, Wesleyan University, Middletown, CT. Interpreting norms of reaction: Approaches and pitfalls.

3:45 Concluding remarks and open discussion.

Presiding: DESROCHÉRS, ANDREÉ, Department of Biological Sciences, Butler University, Indianapolis, IN (317-940-9411)

CONTRIBUTED PAPERS: Plant Reproductive Biology. Ecological and Tropical Biology sections. Joint session with the Canadian Botanical Association (CBA/ABC).

1:15 BSA 76.1 O'CONNELL, LISA M.* and ECKERT, CHRISTOPHER G. Queen's University, Kingston, ON. Evolutionary differentiation in sexuality and life history in polyploid agamic Antennaria parlinii (Asteraceae).

1:30 BSA 76.2 ECKERT, CHRISTOPHER G. Queen's University, Kingston, ON. An experimental analysis of geitonogamy and the selective value of self-fertilization in Decodon verticillatus (Lythraceae).

1:45 BSA 76.3 ANTOS, JOSEPH A.* and ALLEN, GERALDINE A. University of Victoria, BC. Patterns of reproductive effort in male and female shrubs of Oemleria cerasiformis: a six-year study.

2:00 BSA 76.4 HANNAN, GARY L.* and ORICK, MICHAEL W. Eastern Michigan University, Ypsilanti. Genetic structure and pollination biology of Iris cristata and the threatened enemic Iris lacustris.

2:15 BSA 76.5 LARSON, BRENDON M.H. and BARRETT, SPENCER C.H.* University of Toronto, ON. Buzzing on the edge: the reproductive ecology of meadow-beauty (Rhexia virginiana L.; Melastomataceae).

2:30 BSA 76.6 BARRETT, SPENCER C.H.*; COLE, WILLIAM W. and HERRERA, CARLOS M. University of Toronto, ON and Estacion Biologica de Doñana, Sevilla, Spain. Mating patterns in Narcissus longispathus.

POSTER SESSION: Phycology. Phycological section. Joint session with the Canadian Botanical Association (CBA/ABC).

BSA 77.1 THOMAS, ROBERT J. and CICIOTTE, STEVE L. Bates College. Carbon exchange between Polysiphonia lanosa (Rhodophyceae) and its brown algal host.

BSA 77.2 BEZERRA, MYLENE* and ACCIOLY, MIGUEL DA C. Universidade Federal da Bahia, Brazil. Macrophytobenthonic community succession in marine shrimp cultivation cage at Serinhaem estuary, Bahia, Brazil.

BSA 77.3 TREMBLAY, ROXANNE and PIENITZ, REINHARD. Université Laval, Ste. Foy, PQ. Eutrophication history of St. Charles Lake, Quebec: a paleolimnological approach.

BSA 77.4 FALLU, MARIE-ANDRÉE and PIENITZ, REINHARD. Université Laval, Ste. Foy, PQ. Distribution of freshwater diatoms in northern Quebec (Canada), and development of a model for paleoclimatic reconstructions.

CONTRIBUTED PAPERS: General. Systematics Section. Joint session with ASPT session 16 and with the Canadian Botanical Association (CBA/ABC).

CONTRIBUTED PAPERS: General. Systematics Section. Joint session with ASPT session 17 and with the Canadian Botanical Association (CBA/ABC).

6:00 MIXER. Botanical Society of America.

7:00 ANNUAL BANQUET FOR ALL BOTANISTS (ticket required). Botanical Society of America.