1:15 PM	Registration
1:45 PM	Opening Remarks: Janet Novak, president of the Philadelphia Botanical Club William Brown, president of the Academy of Natural Sciences Alfred E. Schuyler, Moderator
2:00 PM	James G. Lennox, "Chance, Design, and Contrivance: Asa Gray, Charles Darwin, and the Metaphysics of Orchids"
3:00 PM	Break
3:15 PM	Karl Niklas, "Darwin's Second 'Abominable Mystery': Why Are There So Many Angiosperms?"
4:15 PM	Break
4:30 PM	Tatyana Livshultz, "Evolution of Pollination Mechanisms in the Milkweed Family (Apocynaceae)"
5:30 PM	Closing Remarks: Ann F. Rhoads
5:45-7 PM	Reception