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| Description. The pinnately compound leaves have oval leaflets 2-5 cm in length. Fragrant white or cream-colored legume flowers develop into large brown leathery pods containing five to nine seeds. The black locust typically has short (1- to 2-cm) thorns. |
| Geographic range. Several species of locust trees are naturalized in the woods of the eastern half of the United States. They are also grown as landscape trees. |
| Toxic principle. Robin, a plant phytotoxin, is similar to the toxic principles found in castor bean (ricin) and rosary pea (abrin). The bark, seeds and leaves contain the toxin. |
| Toxicity. Consumption of as little as 0.04% of body weight is toxic to horses; cattle may be affected by consumption of approximately 0.5% body weight. |
DiagnosisClinical signs: Nausea, emesis, diarrhea and renal failure may be accompanied by weakness, dyspnea, tachycardia and depression. Laboratory diagnosis: non-specific Lesions: gastroenteritis |
| Treatment is of limited value, but should include detoxification and supportive therapy. |
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Copyright © 2002University of Pennsylvania Created by: Alexander Chan (2003), Daphne Downs (2002), Chris Tsai (2001), Brett Begley (2000), Janet Triplett (1997) Faculty Advisor: Dr. Robert Poppenga
