1. The Morton Arboretum 4100 IL‐53, Lisle Illinois 60532 U.S.A.
2. Singapore Botanic Gardens National Parks Board 1 Cluny Road 259569 Singapore
3. Florida International University, International Center for Tropical Botany Institute of Environment 11200 SW 8th Street, OE 148 Miami Florida 33199 U.S.A. (current affiliation)
4. University of British Columbia, Faculty of Forestry 2424 Main Mall, Vancouver British Columbia V6T 1Z4 Canada (current affiliation)
5. Royal Botanic Gardens Kew Richmond TW9 3AE United Kingdom
6. School of Life Sciences University of Bedfordshire Luton LU1 3JU United Kingdom (current affiliation)
7. Herbarium Bogoriense, Research Center for Biology Indonesian Institute of Sciences Cibinong Jawa Barat Indonesia
8. Center for Plant Conservation Botanic Gardens Indonesian Institute of Sciences Bogor Jawa Barat Indonesia
9. Chicago Botanic Garden, Plant Science and Conservation 1000 Lake Cook Road, Glencoe Illinois 60022 U.S.A.
10. Northwestern University Plant Biology and Conservation Program 2205 Tech Dr. Evanston Illinois 60208 U.S.A.
11. The Field Museum 1400 S Lake Shore Dr., Chicago Illinois 60605 U.S.A.