1. USDA-ARS, National Lab. for Genetic Resources Preservation; 1111 South Mason St. Fort Collins CO 80521 USA
2. Natural Resources Ecology Lab.; Colorado State Univ.; Fort Collins CO 80521 USA
3. International Center for Tropical Agriculture (CIAT); Km 17, Recta Cali-Palmira, Apartado Aéreo 6713 763537 Cali Colombia
4. USDA-ARS; Plant Germplasm Introduction and Testing Research; 24106 North Bunn Rd. Prosser WA 99350 USA
5. Dep. of the Interior; Bureau of Land Management; 1849 C St. NW Washington DC 20240 USA
6. Chicago Botanic Garden, 1000 Lake Cook Rd. Glencoe IL 60022 USA