1. USDA-ARS; National Lab. for Genetic Resources Preservation; 1111 South Mason Street Fort Collins CO 80521 USA
2. International Center for Tropical Agriculture (CIAT); Km 17, Recta Cali-Palmira, Apartado Aéreo 6713 763537 Cali Colombia
3. Denver Botanic Gardens; 909 York St. Denver CO 80206 USA
4. Dep. of Biology; Saint Louis Univ.; 1 N. Grand Blvd. St. Louis MO 63103 USA
5. Donald Danforth Plant Science Center; 975 N Warson Rd. St. Louis MO 63132 USA
6. Univ. of British Columbia Botanical Garden; 6804 SW Marine Dr. Vancouver BC Canada V6T 1Z4