Cytisus laburnum syn Laburnum anagyroides (common laburnum,
golden rain tree, golden chain). Related species are equally toxic:
C. alpinus syn Laburnum alpinum (Scotch laburnum);
A member of the plant family PAPILIONACEAE (LEGUMINACEAE). Common ornamental tree
or shrub with trifoliate green leaves and bunches of pendulous yellow flowers. These
develop into flat hairy, pea-like pods which become black on drying, releasing minute
dark brown seeds.
Animals most affected
Horses, cattle, dogs, poultry.
Ingestion of branches, leaves and bark in
times of food shortage (horses, cattle) and of the seeds (dogs, poultry).
Contains the alkaloids cytisine, methylcytisine,
laburnine and laburnamine, which are found chiefly in the seeds (up to 3%) and leaves
Oral doses are not well-established:
LD in g seeds per kg body weight
small ruminants and rabbits are relatively
resistant to the compounds.
agitation, dyspnoea, vomiting, cramps; followed by
convulsions and death, which is often
very rapid in its onset.
Additionally in the horse
salivation, colic, cold sweats, tachycardia.
No specific antidote. Symptomatic care only: