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Here He Received His Ph.D Table of contents Program overview ................................................................................................................... 2 Cuatrecasas medal ................................................................................................................. 3 Detailed program and abstracts .............................................................................................. 5 List of conference registrants ................................................................................................ 63 Acknowledgments ................................................................................................................. 69 Notes ..................................................................................................................................... 71 Unless otherwise noted, all events are held in the Baird Auditorium on the ground floor of the National Museum of Natural History (NMNH) When an abstract is multi-authored, the speaker is designated with an asterisk (*) 1 Program overview ! MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY 8:00 AM Morning coffee Morning coffee Morning coffee 8:15 AM Morning coffee 8:30 AM 8:45 AM 9:00 AM Colloquium Colloquium Colloquium Opening remarks presentations presentations presentations 9:15 AM (biogeography) (genomics) (integration) 9:30 AM Symposium 9:45 AM presentations Workshops 10:00 AM Coffee break Coffee break Coffee break 10:15 AM Coffee break 10:30 AM 10:45 AM Colloquium Colloquium 11:00 AM presentations Colloquium presentations 11:15 AM Symposium (biogeography) presentations (integration) 11:30 AM presentations (genomics) 11:45 AM 12:00 PM 12:15 PM Lunch break Lunch break 12:30 PM 12:45 PM Lunch break Lunch break 1:00 PM 1:15 PM 1:30 PM 1:45 PM 2:00 PM Contributed Contributed 2:15 PM Symposium presentations Contributed presentations 2:30 PM presentations presentations 2:45 PM 3:00 PM 3:15 PM Coffee break Coffee break Coffee break Coffee break 3:30 PM 3:45 PM Field trip 4:00 PM 4:15 PM Colloquium Colloquium Contributed Symposium 4:30 PM presentations presentations presentations presentations 4:45 PM (ecology) (development) 5:00 PM 5:15 PM Closing remarks 5:30 PM 5:45 PM 6:00 PM 6:15 PM 6:30 PM 6:45 PM 7:00 PM 7:15 PM Reception and Reception and 7:30 PM poster session dinner 7:45 PM 8:00 PM 8:15 PM 8:30 PM 2 Cuatrecasas medal! JOSÉ CUATRECASAS MEDAL FOR EXCELLENCE IN TROPICAL BOTANY The Department of Botany and the United States National Herbarium present this award to a botanist and scholar of international stature who has contributed significantly to advancing the field of tropical botany. The José Cuatrecasas Medal for Excellence in Tropical Botany is named in honor of Dr. José Cuatrecasas, a pioneering botanist and taxonomist, who spent nearly a half- century working in the Smithsonian Institution's Department of Botany. Dr. Cuatrecasas devoted his career to plant exploration in tropical South America and this award serves to keep vibrant the accomplishments and memory of this outstanding scientist. The winner of this prestigious award is selected by a committee made up of four botanists on the staff of the Department in consultation with other plant scientists outside of the Smithsonian Institution. Nominations for the Medal are accepted from all scientists in the Botany Department. The award consists of a bronze medal bearing an image of José Cuatrecasas on the front with the recipient’s name and date of presentation on the back. PAULO G. WINDISCH, 2015 CUATRECASAS MEDAL RECIPIENT Dr. Paulo Günter Windisch received his bachelor’s degree from the Universidade de São Paulo in Brazil in 1971. He then went on to study under Rolla Tryon at Harvard University in Cambridge, Massachusetts, where he received his Ph.D. in 1977 with a dissertation on tropical American ferns. His career has been devoted since then to teaching and research in his native Brazil punctuated with post-doctoral appointments. The first of these was in 1984 when he spent a year studying at the University of Aarhus in Denmark where he worked with Benjamin Ølgaard. The second occurred a decade later when he spent two years here in Washington working in the US National Herbarium, which was then being curated by David Lellinger. The Cuatrecasas Medal selection committee took special note of Windisch’s extensive contributions to the systematics, biogeography, and evolution of neotropical pteridophytes. He has published almost 100 research articles—almost all on ferns and fern allies—and a book-length guide to the pteridophytes of São Paulo state. In addition, he and his students have presented well over 100 talks in meetings and congresses. This latter statistic speaks to another aspect of Windisch’s career that is especially noteworthy and exemplary: his impressive contribution to educating and mentoring university students in Brazil. Windisch has served as principal advisor to 16 Masters-level and 8 Ph.D.-level students, as well as serving on the post-graduate committees of another 30 students. Now retired from university teaching, Windisch continues to publish on tropical American ferns. 3 Cuatrecasas medal! ! PAST CUATRECASAS MEDAL RECIPIENTS 2014 H. Peter Linder, Institute of Systematic Botany, University of Zurich, Switzerland 2013 Ana Maria Giulietti Harley, Universidade Estadual de Feira de Santana, Bahia, Brazil 2012 Walter S. Judd, University of Florida at Gainesville 2010 Beryl B. Simpson, University of Texas at Austin 2009 Norris H. Williams, Florida Museum of Natural History and the University of Florida, Gainesville 2008 Mireya D. Correa A., University of Panama and the Smithsonian Tropical Research Institute 2006 Sherwin Carlquist, Rancho Santa Ana Botanic Garden and Pomona College 2005 Jerzy Rzedowski & Graciela Calderón de Rzedowski, Instituto de Ecología del Bajío, Michoacán, Mexico 2004 David Mabberley, University of Leiden, Netherlands & Royal Botanic Gardens, Sydney 2003 John Beaman, Royal Botanic Gardens, Kew 2002 P. Barry Tomlinson, Harvard University 2001 Rogers McVaugh, University of North Carolina at Chapel Hill 4 Detailed program and abstracts, MONDAY, 1 June 2015 8:00 AM MORNING COFFEE. Atrium Café (NMNH ground floor) 8:00 AM REGISTRATION. Entrance to Baird Auditorium (NMNH ground floor) 9:00 AM OPENING REMARKS AND PRESENTATION OF THE CUATRECASAS MEDAL. Contributions by: Warren L. Wagner (Chair of Botany, Smithsonian Institution, USA), Kirk Johnson (Sant Director, Smithsonian Institution, USA), Ari Novy (Executive Director, United States Botanic Garden, USA), Laurence J. Dorr (Cuatrecasas Medal Committee Chair, Smithsonian Institution, USA), Eric Schuettpelz (Convener, Smithsonian Institution, USA) 9:30 AM OPENING SYMPOSIUM 9:30 AM An overview of ferns and lycophytes. Robbin C. Moran (New York Botanical Garden, USA) During the Renaissance, people believed that ferns reproduced by invisible seeds. It was not until 1794 that it was demonstrated that the “dust” produced on the back of a fern leaf developed into small green “cotyledons.” This observation initiated the study of fern and lycophyte life cycles. The importance of understanding this life cycle cannot be overemphasized: it generates and explains much of the distinctive biology of ferns and lycophytes. Worldwide, there are about 13,600 species of ferns and lycophytes. This contrasts with about 450,000 species of angiosperms. Why fewer species of ferns and lycophytes? One idea is that, compared to angiosperms, ferns and lycophytes present fewer barriers to gene flow. Thus, their populations do not become readily isolated genetically, a condition considered a prerequisite for divergent speciation. Compared to angiosperms, ferns and lycophytes are more widely distributed. As a percentage of the total vascular-plant flora on far-flung oceanic islands, ferns and lycophytes are over-represented. This is best explained by the ease with which these plants disperse by tiny dust-like spores. Some species exhibit remarkable adaptations such as iridescent leaves, modified stems harboring ants, and water-absorbing scales that quickly rehydrate dried leaves. Ferns and lycophytes are also used by people: the fiddleheads of some ferns are eaten, and Azolla has been used since 1100 AD in the rice paddies of southeastern Asia as a fertilizer. Research on ferns and lycophytes has been transformed over the past 20 years by the introduction of DNA methods. We now have the ability to generate hypotheses of relationships, or “family trees,” using DNA and morphological datasets. With these trees, we can analyze such things as character evolution, biogeography, and evolutionary rates. Given recent advances, there has never been a more exciting time to study ferns and lycophytes. 10:15 AM COFFEE BREAK. Atrium Café (NMNH ground floor) 10:45 AM OPENING SYMPOSIUM (CONTINUED) 10:45 AM Silurian-Devonian fossil plants provide some insights into the evolutionary history of ferns and lycophytes. Patricia G. Gensel (University of North Carolina Chapel Hill, USA) Studies of both spores and macrofossils over the past few decades clearly indicate that land plants existed much earlier in time than previously realized (late Ordovician for embryophytes, late Silurian for zosterophylls, lycophytes, cooksonioids), and current work may suggest even earlier. This realization influences our thinking about the timing of both originations and diversification rates of various lineages and of evolutionary innovations. New data are available on the major events in the evolution of both the lycophytes s.l., and those Devonian
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