1. Poisonous Plant
Research Laboratory, Agricultural Research Service, U.S. Department
of Agriculture, 1150 East 1400 North, Logan, Utah 84341, United States
2. Department
of Agriculture and Food, Western Australia, South Perth, Western Australia 6151, Australia
3. Hospital Veterinario,
CSTR, Universidade Federal de Campina Grande, Patos 58700-310, Paraı́ba, Brazil
4. Missouri Botanical Garden, P.O. Box 299, St.
Louis, Missouri 63166, United States