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General poisoning notes:
Golden-chain (Laburnum anagyroides) is an outdoor ornamental that survives only in southwestern Ontario and coastal British Columbia. (Canada: Zones 7 - 6 -5) This plant contains cytisine, an alkaloid, which has caused poisoning and death in cattle, dogs, horses, swine, and humans after twigs, fruit pods, and seeds were ingested. Most of the cases of poisoning are found in European literature. Children and family pets should be prevented from ingesting the pods or seeds (Cooper and Johnson 1984, Lampe and McCann 1985, Fuller and McClintock 1986).
Humans
General symptoms of poisoning:
abdominal pains
confusion
death
dizziness
drowsiness
headache
mouth, irritation of
nausea
temperature, elevated
vomiting
Notes on poisoning:
Most cases of human poisoning occur when children eat the pods or seeds by mistake. Symptoms develop rapidly within half an hour because cytisine is rapidly absorbed through mucous membranes of the mouth, stomach, and intestine. Nausea, vomiting, pupil dilation, weakness, breathing difficulty, dizziness, and muscular incoordination can result. Ingesting large quantities can be fatal. In one case, a man ingested 23 pods of golden-chain and died. Toxicological analysis showed that 35-50 mg of cytisine had been absorbed (Cooper and Johnson 1984, Fuller and McClintock 1986).
Cattle
General symptoms of poisoning:
death
gait, unsteady
muscle spasms
recumbency
Notes on poisoning:
Ingesting twigs and pods of golden-chain have produced toxic symptoms including stiff, unsteady gait, violent tremors, recumbency, and death. Milk yield has been reduced, and large yellow clots were found in the milk (Cooper and Johnson 1984).
Dogs
General symptoms of poisoning:
convulsions
death
Notes on poisoning:
Dogs that were poisoned experienced convulsions and died after chewing golden-chain sticks (Cooper and Johnson 1984).
Horses
General symptoms of poisoning:
abdominal pains
coma
death
incoordination
muscle spasms
References:
Cooper, M. R., Johnson, A. W. 1984. Poisonous plants in Britain and their effects on animals and man. Her Majesty's Stationery Office, London, England. 305 pp.
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Human tongue will not tell what one can eat, or what not.
If one did not see, or heard of anybody being poisoned, that does not mean that it did not or can not happen.
Perhaps some (whose though?) educated tongue can differentiate poisonous substances from those that are good for us, most human tongues CAN NOT.
Children and animals most certainly can not, unless they had a misfortune to come in contact with this stuff beforehand and survived?
Most unknown and unproven stuff one learns - preferably by education (what I'm trying here) or by trial and error. Therefore the human tongue can only tell the difference after it had encountered the above mentioned unpleasantness of this or similar plants. . .
To sugest here that ones tongue will save people from death is irresponsible to say the least.
What kind of Laburnum do you have in Finland?
You say that you are at the same latitude as Alaska? Laburnum grows here up to zone 5 ?