1. Division of Botany, Peabody Museum of Natural History, Yale University, P.O. Box 208118, New Haven, Connecticut 06520, U.S.A.;, Email: patrick.sweeney@yale.edu
2. Edward P. Fitts Department of Industrial and Systems Engineering, North Carolina State University, Raleigh, North Carolina 27607, U.S.A.
3. Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts 02138, U.S.A.
4. School of Computer Science, University of Oklahoma, Norman, Oklahoma 73019, U.S.A.
5. School of Industrial and Systems Engineering, University of Oklahoma, Norman, Oklahoma 73019, U.S.A.
6. Harvard University Herbaria, Harvard University, Cambridge, Massachusetts 02138, U.S.A.
7. Department of Organismic and Evolutionary Biology and Harvard University Herbaria, Harvard University, Cambridge, Massachusetts 02138, U.S.A.