Datura stratmonium (common datum, jim-weed, false castor oil plant, stramoniurn, spiny apple, Jamestown weed, mad apple, brugmansia). A member of the plant family SOLANCEAE. Annual herbaceous plant with an erect stem, bearing long oval, petiolate leaves. Flowers are terminal, long and funnel-shaped, white, pale blue or violet in colour. The fruits are distinctive round, pale green capsules covered in spines which are the same colour as the capsule. The capsules split from the top into four parts, revealing many dark brown seeds.


[affected.gif] Animals most affected
Cattle, horses, pigs.


[etiology.gif] Etiology
Ingestion of the fresh plant (incidences are rare as the plant has a strong, unpleasant odour) or of contaminated hay.


[toxic.gif] Toxicity
All parts of the plant, particularly the seeds, are poisonous and contain a number of tropane alkaloids including atropine, Lhyoscyamine and scopolamine (hyoscine). Drying the plant does not reduce its toxicity.

Oral doses not well known:
TD horses 0.5% in the diet (seeds)
  pigs 2.7 mg/kg


[clinical.gif] Clinical features

In horses (rare):


[lesions.gif] Lesions
Non-specific.


[treatm~1.gif] Treatment
No specific antidote, symptomatic care only: