Common Name
Botanic Name
Lantana camara
Plant Family
An ornamental shrub in the warmer climates of North America, often escaping along stream bottoms in the southern States to become an invasive noxious weed.
Animals Affected
Cattle, sheep, children
Toxic Principle
The triterpene acids lantadene A and B. induce an intrahepatic cholestasis. At least 15 of the 29 described taxa of Lantana camara are known to be toxic to livestock. About 1% body weight of green leaves will induce poisoning. All parts of the plant are toxic including the ripe black fruits.
The plant is a shrub with square stems and a few scattered spines. The leaves are simple, opposite or whorled and oval-shaped. The margins are serrate. The flowers born in flat-topped clusters, are small, tubular and white, yellow, orange, red or purple in color. The fruits are produced in clusters and turn black when ripe.
Acute cases develop hemorrhagic diarrhea. Chronic poisoning results in constipation
Physostigmine may have benefit in early poisoning, but must be used cautiously. Supportive therapy to prevent dehydration.
Cardiovascular system
Rapid heart rate
Respiratory System
Difficulty in breathing.
Integumentary System
Photosensitization, especially of the white skinned areas.
Ocular System
Hepatic System
Bile duct canaliculi are affected causing bilestasis and resulting jaundice. death results after animals become severly emaciated.
Elevated liver enzymes and bilirubin
Special Notes
Lantana is an invasive weed that should be vigorously controlled by herbicides or grubbing.